100878521520 has 160 divisors (see below), whose sum is σ = 359251149312. Its totient is φ = 22938402816.

The previous prime is 100878521519. The next prime is 100878521599. The reversal of 100878521520 is 25125878001.

It is a super-2 number, since 2×100878521520² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 168679 + ... + 479801.

Almost surely, 2^100878521520 is an apocalyptic number.

100878521520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 100878521520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (179625574656).

100878521520 is an abundant number, since it is smaller than the sum of its proper divisors (258372627792).

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

100878521520 is a wasteful number, since it uses less digits than its factorization.

100878521520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 311339 (or 311333 counting only the distinct ones).

The product of its (nonzero) digits is 44800, while the sum is 39.

The spelling of 100878521520 in words is "one hundred billion, eight hundred seventy-eight million, five hundred twenty-one thousand, five hundred twenty".