665676100500 has 96 divisors (see below), whose sum is σ = 1948289511168. Its totient is φ = 176612464000.

The previous prime is 665676100493. The next prime is 665676100501. The reversal of 665676100500 is 5001676566.

It is a super-2 number, since 2×665676100500² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (665676100501) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 830856 + ... + 1421855.

It is an arithmetic number, because the mean of its divisors is an integer number (20294682408).

Almost surely, 2^665676100500 is an apocalyptic number.

665676100500 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

665676100500 is an abundant number, since it is smaller than the sum of its proper divisors (1282613410668).

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

665676100500 is a wasteful number, since it uses less digits than its factorization.

665676100500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2252930 (or 2252918 counting only the distinct ones).

The product of its (nonzero) digits is 226800, while the sum is 42.

The spelling of 665676100500 in words is "six hundred sixty-five billion, six hundred seventy-six million, one hundred thousand, five hundred".