3166620400520 has 32 divisors (see below), whose sum is σ = 7125810871320. Its totient is φ = 1266485498880.

The previous prime is 3166620400499. The next prime is 3166620400613. The reversal of 3166620400520 is 250040266613.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 2466476532004 + 700143868516 = 1570502^2 + 836746^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4767551 + ... + 5390990.

Almost surely, 2^{3166620400520} is an apocalyptic number.

It is an amenable number.

3166620400520 is an abundant number, since it is smaller than the sum of its proper divisors (3959190470800).

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

3166620400520 is a wasteful number, since it uses less digits than its factorization.

3166620400520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10166345 (or 10166341 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 35.

The spelling of 3166620400520 in words is "three trillion, one hundred sixty-six billion, six hundred twenty million, four hundred thousand, five hundred twenty".