6511555500045 has 16 divisors (see below), whose sum is σ = 10422153479232. Its totient is φ = 3471608040320.

The previous prime is 6511555500017. The next prime is 6511555500067. The reversal of 6511555500045 is 5400055551156.

It is not a de Polignac number, because 6511555500045 - 2⁵ = 6511555500013 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 76303416 + ... + 76388705.

It is an arithmetic number, because the mean of its divisors is an integer number (651384592452).

Almost surely, 2^{6511555500045} is an apocalyptic number.

It is an amenable number.

6511555500045 is a deficient number, since it is larger than the sum of its proper divisors (3910597979187).

6511555500045 is a wasteful number, since it uses less digits than its factorization.

6511555500045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152694972.

The product of its (nonzero) digits is 375000, while the sum is 42.

The spelling of 6511555500045 in words is "six trillion, five hundred eleven billion, five hundred fifty-five million, five hundred thousand, forty-five".