15550504100 has 18 divisors (see below), whose sum is σ = 33744594114. Its totient is φ = 6220201600.

The previous prime is 15550504031. The next prime is 15550504141. The reversal of 15550504100 is 140505551.

It can be written as a sum of positive squares in 3 ways, for example, as 4074524224 + 11475979876 = 63832^2 + 107126^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 15550504100.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 77752421 + ... + 77752620.

It is an arithmetic number, because the mean of its divisors is an integer number (1874699673).

Almost surely, 2^15550504100 is an apocalyptic number.

15550504100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15550504100 is an abundant number, since it is smaller than the sum of its proper divisors (18194090014).

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

15550504100 is a wasteful number, since it uses less digits than its factorization.

15550504100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155505055 (or 155505048 counting only the distinct ones).

The product of its (nonzero) digits is 2500, while the sum is 26.

The spelling of 15550504100 in words is "fifteen billion, five hundred fifty million, five hundred four thousand, one hundred".