316640556428 has 72 divisors (see below), whose sum is σ = 694075087440. Its totient is φ = 125555727360.

The previous prime is 316640556409. The next prime is 316640556443. The reversal of 316640556428 is 824655046613.

It is a super-2 number, since 2×316640556428² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 608753 + ... + 1001928.

It is an arithmetic number, because the mean of its divisors is an integer number (9639931770).

Almost surely, 2^316640556428 is an apocalyptic number.

It is an amenable number.

316640556428 is an abundant number, since it is smaller than the sum of its proper divisors (377434531012).

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

316640556428 is a wasteful number, since it uses less digits than its factorization.

316640556428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1610775 (or 1610766 counting only the distinct ones).

The product of its (nonzero) digits is 4147200, while the sum is 50.

The spelling of 316640556428 in words is "three hundred sixteen billion, six hundred forty million, five hundred fifty-six thousand, four hundred twenty-eight".