38767857517645 has 16 divisors (see below), whose sum is σ = 46641326220720. Its totient is φ = 30934454284800.

The previous prime is 38767857517591. The next prime is 38767857517663. The reversal of 38767857517645 is 54671575876783.

It can be written as a sum of positive squares in 8 ways, for example, as 3138633881161 + 35629223636484 = 1771619^2 + 5969022^2 .

It is not a de Polignac number, because 38767857517645 - 2²⁵ = 38767823963213 is a prime.

It is a super-3 number, since 3×38767857517645³ (a number of 42 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3122760 + ... + 9342769.

It is an arithmetic number, because the mean of its divisors is an integer number (2915082888795).

Almost surely, 2^{38767857517645} is an apocalyptic number.

It is an amenable number.

38767857517645 is a deficient number, since it is larger than the sum of its proper divisors (7873468703075).

38767857517645 is a wasteful number, since it uses less digits than its factorization.

38767857517645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12467136.

The product of its digits is 8297856000, while the sum is 79.

The spelling of 38767857517645 in words is "thirty-eight trillion, seven hundred sixty-seven billion, eight hundred fifty-seven million, five hundred seventeen thousand, six hundred forty-five".