100861256938 has 32 divisors (see below), whose sum is σ = 172620446544. Its totient is φ = 43785956352.

The previous prime is 100861256849. The next prime is 100861256939. The reversal of 100861256938 is 839652168001.

100861256938 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 7645228969 + 93216027969 = 87437^2 + 305313^2 .

It is a super-2 number, since 2×100861256938² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 100861256891 and 100861256900.

It is not an unprimeable number, because it can be changed into a prime (100861256939) 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, 653856 + ... + 793252.

Almost surely, 2^100861256938 is an apocalyptic number.

100861256938 is a deficient number, since it is larger than the sum of its proper divisors (71759189606).

100861256938 is a wasteful number, since it uses less digits than its factorization.

100861256938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141066.

The product of its (nonzero) digits is 622080, while the sum is 49.

The spelling of 100861256938 in words is "one hundred billion, eight hundred sixty-one million, two hundred fifty-six thousand, nine hundred thirty-eight".