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38870697693942 = 23319291677822769
BaseRepresentation
bin10001101011010010010100…
…01000001101001011110110
312002122000001202101212101000
420311221022020031023312
520043324142102201232
6214400541344344130
711121213060605322
oct1065511210151366
9162560052355330
1038870697693942
1111426a74544914
12443949a015046
13188c64cb39c6a
149854cd500982
154761b1a0b27c
hex235a4a20d2f6

38870697693942 has 128 divisors (see below), whose sum is σ = 94624225920000. Its totient is φ = 11780713115136.

The previous prime is 38870697693889. The next prime is 38870697693943. The reversal of 38870697693942 is 24939679607883.

38870697693942 is a `hidden beast` number, since 3 + 8 + 87 + 0 + 6 + 97 + 69 + 394 + 2 = 666.

It is a super-2 number, since 2×388706976939422 (a number of 28 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (81) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38870697693943) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1057534 + ... + 8880302.

It is an arithmetic number, because the mean of its divisors is an integer number (739251765000).

Almost surely, 238870697693942 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 38870697693942, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47312112960000).

38870697693942 is an abundant number, since it is smaller than the sum of its proper divisors (55753528226058).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

38870697693942 is a wasteful number, since it uses less digits than its factorization.

38870697693942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7822995 (or 7822989 counting only the distinct ones).

The product of its (nonzero) digits is 5925685248, while the sum is 81.

The spelling of 38870697693942 in words is "thirty-eight trillion, eight hundred seventy billion, six hundred ninety-seven million, six hundred ninety-three thousand, nine hundred forty-two".