6551500111500 has 96 divisors (see below), whose sum is σ = 20200201834176. Its totient is φ = 1644298060800.

The previous prime is 6551500111469. The next prime is 6551500111547. The reversal of 6551500111500 is 51110051556.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 128435287 + ... + 128486286.

It is an arithmetic number, because the mean of its divisors is an integer number (210418769106).

Almost surely, 2^{6551500111500} is an apocalyptic number.

6551500111500 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

6551500111500 is an abundant number, since it is smaller than the sum of its proper divisors (13648701722676).

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

6551500111500 is a wasteful number, since it uses less digits than its factorization.

6551500111500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 256921612 (or 256921600 counting only the distinct ones).

The product of its (nonzero) digits is 3750, while the sum is 30.

The spelling of 6551500111500 in words is "six trillion, five hundred fifty-one billion, five hundred million, one hundred eleven thousand, five hundred".