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38870697693889 is a prime number
BaseRepresentation
bin10001101011010010010100…
…01000001101001011000001
312002122000001202101212022001
420311221022020031023001
520043324142102201024
6214400541344344001
711121213060605215
oct1065511210151301
9162560052355261
1038870697693889
1111426a74544876
12443949a015001
13188c64cb39c29
149854cd500945
154761b1a0b244
hex235a4a20d2c1

38870697693889 has 2 divisors, whose sum is σ = 38870697693890. Its totient is φ = 38870697693888.

The previous prime is 38870697693859. The next prime is 38870697693943. The reversal of 38870697693889 is 98839679607883.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 38524577271489 + 346120422400 = 6206817^2 + 588320^2 .

It is a cyclic number.

It is not a de Polignac number, because 38870697693889 - 215 = 38870697661121 is a prime.

It is a super-2 number, since 2×388706976938892 (a number of 28 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (38870697693859) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19435348846944 + 19435348846945.

It is an arithmetic number, because the mean of its divisors is an integer number (19435348846945).

Almost surely, 238870697693889 is an apocalyptic number.

It is an amenable number.

38870697693889 is a deficient number, since it is larger than the sum of its proper divisors (1).

38870697693889 is an equidigital number, since it uses as much as digits as its factorization.

38870697693889 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 47405481984, while the sum is 91.

The spelling of 38870697693889 in words is "thirty-eight trillion, eight hundred seventy billion, six hundred ninety-seven million, six hundred ninety-three thousand, eight hundred eighty-nine".