665406361023300 has 216 divisors, whose sum is σ = 2316366602736480. Its totient is φ = 163792334908800.

The previous prime is 665406361023227. The next prime is 665406361023353. The reversal of 665406361023300 is 3320163604566.

665406361023300 is a `hidden beast` number, since 6 + 6 + 5 + 4 + 0 + 6 + 3 + 610 + 23 + 3 + 0 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 728676246 + ... + 729588845.

Almost surely, 2^{665406361023300} is an apocalyptic number.

665406361023300 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

665406361023300 is an abundant number, since it is smaller than the sum of its proper divisors (1650960241713180).

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

665406361023300 is a wasteful number, since it uses less digits than its factorization.

665406361023300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1458265140 (or 1458265114 counting only the distinct ones).

The product of its (nonzero) digits is 1399680, while the sum is 45.

The spelling of 665406361023300 in words is "six hundred sixty-five trillion, four hundred six billion, three hundred sixty-one million, twenty-three thousand, three hundred".