2166507625522 has 32 divisors (see below), whose sum is σ = 3324413435904. Its totient is φ = 1058447745600.

The previous prime is 2166507625517. The next prime is 2166507625549. The reversal of 2166507625522 is 2255267056612.

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, 170975247 + ... + 170987917.

It is an arithmetic number, because the mean of its divisors is an integer number (103887919872).

Almost surely, 2^{2166507625522} is an apocalyptic number.

2166507625522 is a deficient number, since it is larger than the sum of its proper divisors (1157905810382).

2166507625522 is a wasteful number, since it uses less digits than its factorization.

2166507625522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15594.

The product of its (nonzero) digits is 3024000, while the sum is 49.

The spelling of 2166507625522 in words is "two trillion, one hundred sixty-six billion, five hundred seven million, six hundred twenty-five thousand, five hundred twenty-two".