38804656681 has 12 divisors (see below), whose sum is σ = 46241091540. Its totient is φ = 32449885440.

The previous prime is 38804656651. The next prime is 38804656687. The reversal of 38804656681 is 18665640883.

It can be written as a sum of positive squares in 2 ways, for example, as 18800797456 + 20003859225 = 137116^2 + 141435^2 .

It is not a de Polignac number, because 38804656681 - 2¹³ = 38804648489 is a prime.

It is a super-2 number, since 2×38804656681² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (38804656687) 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, 9655696 + ... + 9659713.

It is an arithmetic number, because the mean of its divisors is an integer number (3853424295).

Almost surely, 2^38804656681 is an apocalyptic number.

It is an amenable number.

38804656681 is a deficient number, since it is larger than the sum of its proper divisors (7436434859).

38804656681 is a wasteful number, since it uses less digits than its factorization.

38804656681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19315464 (or 19315457 counting only the distinct ones).

The product of its (nonzero) digits is 6635520, while the sum is 55.

The spelling of 38804656681 in words is "thirty-eight billion, eight hundred four million, six hundred fifty-six thousand, six hundred eighty-one".