666812455358 has 32 divisors (see below), whose sum is σ = 1155623198400. Its totient is φ = 282656957184.

The previous prime is 666812455349. The next prime is 666812455427. The reversal of 666812455358 is 853554218666.

It is a junction number, because it is equal to n+sod(n) for n = 666812455297 and 666812455306.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 484316 + ... + 1252272.

It is an arithmetic number, because the mean of its divisors is an integer number (36113224950).

Almost surely, 2^666812455358 is an apocalyptic number.

666812455358 is a deficient number, since it is larger than the sum of its proper divisors (488810743042).

666812455358 is a wasteful number, since it uses less digits than its factorization.

666812455358 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 768644.

The product of its digits is 41472000, while the sum is 59.

The spelling of 666812455358 in words is "six hundred sixty-six billion, eight hundred twelve million, four hundred fifty-five thousand, three hundred fifty-eight".