100555550880 has 48 divisors (see below), whose sum is σ = 316749986784. Its totient is φ = 26814813440.

The previous prime is 100555550819. The next prime is 100555550891. The reversal of 100555550880 is 88055555001.

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-2 number, since 2×100555550880² (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 7 ways as a sum of consecutive naturals, for example, 104744886 + ... + 104745845.

It is an arithmetic number, because the mean of its divisors is an integer number (6598958058).

Almost surely, 2^100555550880 is an apocalyptic number.

100555550880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100555550880 is an abundant number, since it is smaller than the sum of its proper divisors (216194435904).

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

100555550880 is a wasteful number, since it uses less digits than its factorization.

100555550880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209490749 (or 209490741 counting only the distinct ones).

The product of its (nonzero) digits is 200000, while the sum is 42.

The spelling of 100555550880 in words is "one hundred billion, five hundred fifty-five million, five hundred fifty thousand, eight hundred eighty".