670557621312 has 196 divisors, whose sum is σ = 2005097132800. Its totient is φ = 222392915712.

The previous prime is 670557621289. The next prime is 670557621359. The reversal of 670557621312 is 213126755076.

It is a happy number.

670557621312 is a `hidden beast` number, since 6 + 7 + 0 + 5 + 5 + 7 + 621 + 3 + 12 = 666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 9248433 + ... + 9320655.

Almost surely, 2^670557621312 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 670557621312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1002548566400).

670557621312 is an abundant number, since it is smaller than the sum of its proper divisors (1334539511488).

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

670557621312 is an equidigital number, since it uses as much as digits as its factorization.

670557621312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72452 (or 72427 counting only the distinct ones).

The product of its (nonzero) digits is 529200, while the sum is 45.

The spelling of 670557621312 in words is "six hundred seventy billion, five hundred fifty-seven million, six hundred twenty-one thousand, three hundred twelve".