100550556100 has 72 divisors (see below), whose sum is σ = 219363225480. Its totient is φ = 40005304320.

The previous prime is 100550556023. The next prime is 100550556131. The reversal of 100550556100 is 1655055001.

It can be written as a sum of positive squares in 12 ways, for example, as 1903053376 + 98647502724 = 43624^2 + 314082^2 .

It is a super-2 number, since 2×100550556100² (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 23 ways as a sum of consecutive naturals, for example, 20480446 + ... + 20485354.

It is an arithmetic number, because the mean of its divisors is an integer number (3046711465).

Almost surely, 2^100550556100 is an apocalyptic number.

100550556100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100550556100 is an abundant number, since it is smaller than the sum of its proper divisors (118812669380).

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

100550556100 is a wasteful number, since it uses less digits than its factorization.

100550556100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5977 (or 5970 counting only the distinct ones).

The product of its (nonzero) digits is 3750, while the sum is 28.

The spelling of 100550556100 in words is "one hundred billion, five hundred fifty million, five hundred fifty-six thousand, one hundred".