10204781697 has 12 divisors (see below), whose sum is σ = 16080262224. Its totient is φ = 6184716120.

The previous prime is 10204781693. The next prime is 10204781729. The reversal of 10204781697 is 79618740201.

It is a happy number.

10204781697 is a `hidden beast` number, since 10 + 2 + 0 + 478 + 169 + 7 = 666.

It is not a de Polignac number, because 10204781697 - 2² = 10204781693 is a prime.

It is not an unprimeable number, because it can be changed into a prime (10204781693) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 51539203 + ... + 51539400.

It is an arithmetic number, because the mean of its divisors is an integer number (1340021852).

Almost surely, 2^10204781697 is an apocalyptic number.

It is an amenable number.

10204781697 is a deficient number, since it is larger than the sum of its proper divisors (5875480527).

10204781697 is a wasteful number, since it uses less digits than its factorization.

10204781697 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103078620 (or 103078617 counting only the distinct ones).

The product of its (nonzero) digits is 169344, while the sum is 45.

The spelling of 10204781697 in words is "ten billion, two hundred four million, seven hundred eighty-one thousand, six hundred ninety-seven".