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38780000161 = 721432585161
BaseRepresentation
bin100100000111011101…
…111101011110100001
310201002122102010100021
4210013131331132201
51113410140001121
625452033553441
72542001363650
oct440735753641
9121078363307
1038780000161
11154a0332111
127623415881
1338703a7a76
141c3c553197
15101e84a641
hex90777d7a1

38780000161 has 8 divisors (see below), whose sum is σ = 44340698624. Its totient is φ = 33224476320.

The previous prime is 38780000153. The next prime is 38780000197. The reversal of 38780000161 is 16100008783.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 38780000161 - 23 = 38780000153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38780003161) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1277580 + ... + 1307581.

It is an arithmetic number, because the mean of its divisors is an integer number (5542587328).

Almost surely, 238780000161 is an apocalyptic number.

38780000161 is the 113696-th hex number.

It is an amenable number.

38780000161 is a deficient number, since it is larger than the sum of its proper divisors (5560698463).

38780000161 is a wasteful number, since it uses less digits than its factorization.

38780000161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2587311.

The product of its (nonzero) digits is 8064, while the sum is 34.

The spelling of 38780000161 in words is "thirty-eight billion, seven hundred eighty million, one hundred sixty-one", and thus it is an aban number.

Divisors: 1 7 2143 15001 2585161 18096127 5540000023 38780000161