3215644005516 has 12 divisors (see below), whose sum is σ = 7503169346232. Its totient is φ = 1071881335168.

The previous prime is 3215644005503. The next prime is 3215644005527. The reversal of 3215644005516 is 6155004465123.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 133985166885 + ... + 133985166908.

It is an arithmetic number, because the mean of its divisors is an integer number (625264112186).

Almost surely, 2^{3215644005516} is an apocalyptic number.

It is an amenable number.

3215644005516 is an abundant number, since it is smaller than the sum of its proper divisors (4287525340716).

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

3215644005516 is a wasteful number, since it uses less digits than its factorization.

3215644005516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 267970333800 (or 267970333798 counting only the distinct ones).

The product of its (nonzero) digits is 432000, while the sum is 42.

The spelling of 3215644005516 in words is "three trillion, two hundred fifteen billion, six hundred forty-four million, five thousand, five hundred sixteen".