55515600215500 has 48 divisors (see below), whose sum is σ = 126517639195584. Its totient is φ = 21240751382400.

The previous prime is 55515600215423. The next prime is 55515600215501. The reversal of 55515600215500 is 551200651555.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (55515600215501) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2413710249 + ... + 2413733248.

It is an arithmetic number, because the mean of its divisors is an integer number (2635784149908).

Almost surely, 2^{55515600215500} is an apocalyptic number.

55515600215500 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

55515600215500 is an abundant number, since it is smaller than the sum of its proper divisors (71002038980084).

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

55515600215500 is a wasteful number, since it uses less digits than its factorization.

55515600215500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4827443539 (or 4827443527 counting only the distinct ones).

The product of its (nonzero) digits is 187500, while the sum is 40.

The spelling of 55515600215500 in words is "fifty-five trillion, five hundred fifteen billion, six hundred million, two hundred fifteen thousand, five hundred".