55511065511500 has 48 divisors (see below), whose sum is σ = 121241037468096. Its totient is φ = 22203534192000.

The previous prime is 55511065511471. The next prime is 55511065511509. The reversal of 55511065511500 is 511556011555.

It is a happy number.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (55511065511509) 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, 10298985 + ... + 14734015.

It is an arithmetic number, because the mean of its divisors is an integer number (2525854947252).

Almost surely, 2^{55511065511500} is an apocalyptic number.

55511065511500 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

55511065511500 is an abundant number, since it is smaller than the sum of its proper divisors (65729971956596).

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

55511065511500 is a wasteful number, since it uses less digits than its factorization.

55511065511500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4460083 (or 4460071 counting only the distinct ones).

The product of its (nonzero) digits is 93750, while the sum is 40.

The spelling of 55511065511500 in words is "fifty-five trillion, five hundred eleven billion, sixty-five million, five hundred eleven thousand, five hundred".