666132655500764 has 24 divisors (see below), whose sum is σ = 1203373373602176. Its totient is φ = 322312351680000.

The previous prime is 666132655500761. The next prime is 666132655500799. The reversal of 666132655500764 is 467005556231666.

It is a Harshad number since it is a multiple of its sum of digits (62).

It is a junction number, because it is equal to n+sod(n) for n = 666132655500697 and 666132655500706.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (666132655500761) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 78454337 + ... + 86529464.

It is an arithmetic number, because the mean of its divisors is an integer number (50140557233424).

Almost surely, 2^{666132655500764} is an apocalyptic number.

It is an amenable number.

666132655500764 is a deficient number, since it is larger than the sum of its proper divisors (537240718101412).

666132655500764 is a wasteful number, since it uses less digits than its factorization.

666132655500764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165016397 (or 165016395 counting only the distinct ones).

The product of its (nonzero) digits is 163296000, while the sum is 62.

The spelling of 666132655500764 in words is "six hundred sixty-six trillion, one hundred thirty-two billion, six hundred fifty-five million, five hundred thousand, seven hundred sixty-four".