69638650857 has 16 divisors (see below), whose sum is σ = 103187668480. Its totient is φ = 46417083696.

The previous prime is 69638650849. The next prime is 69638650901. The reversal of 69638650857 is 75805683696.

69638650857 is a `hidden beast` number, since 6 + 96 + 38 + 6 + 508 + 5 + 7 = 666.

It is not a de Polignac number, because 69638650857 - 2³ = 69638650849 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 69638650794 and 69638650803.

It is not an unprimeable number, because it can be changed into a prime (69638650057) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 92518 + ... + 384495.

It is an arithmetic number, because the mean of its divisors is an integer number (6449229280).

Almost surely, 2^69638650857 is an apocalyptic number.

It is an amenable number.

69638650857 is a deficient number, since it is larger than the sum of its proper divisors (33549017623).

69638650857 is a wasteful number, since it uses less digits than its factorization.

69638650857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 482429 (or 482423 counting only the distinct ones).

The product of its (nonzero) digits is 65318400, while the sum is 63.

The spelling of 69638650857 in words is "sixty-nine billion, six hundred thirty-eight million, six hundred fifty thousand, eight hundred fifty-seven".