100581686838 has 24 divisors (see below), whose sum is σ = 230746223448. Its totient is φ = 31555038912.

The previous prime is 100581686831. The next prime is 100581686851. The reversal of 100581686838 is 838686185001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100581686831) 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, 164348856 + ... + 164349467.

It is an arithmetic number, because the mean of its divisors is an integer number (9614425977).

Almost surely, 2^100581686838 is an apocalyptic number.

100581686838 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

100581686838 is an abundant number, since it is smaller than the sum of its proper divisors (130164536610).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

100581686838 is a wasteful number, since it uses less digits than its factorization.

100581686838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 328698348 (or 328698345 counting only the distinct ones).

The product of its (nonzero) digits is 2211840, while the sum is 54.

The spelling of 100581686838 in words is "one hundred billion, five hundred eighty-one million, six hundred eighty-six thousand, eight hundred thirty-eight".