6561602215670 has 32 divisors (see below), whose sum is σ = 12034016644320. Its totient is φ = 2575058204160.

The previous prime is 6561602215543. The next prime is 6561602215681. The reversal of 6561602215670 is 765122061656.

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, 26870825 + ... + 27113915.

It is an arithmetic number, because the mean of its divisors is an integer number (376063020135).

Almost surely, 2^{6561602215670} is an apocalyptic number.

6561602215670 is a deficient number, since it is larger than the sum of its proper divisors (5472414428650).

6561602215670 is a wasteful number, since it uses less digits than its factorization.

6561602215670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 294080.

The product of its (nonzero) digits is 907200, while the sum is 47.

The spelling of 6561602215670 in words is "six trillion, five hundred sixty-one billion, six hundred two million, two hundred fifteen thousand, six hundred seventy".