2166062521408 has 28 divisors (see below), whose sum is σ = 4298565527820. Its totient is φ = 1082959396352.

The previous prime is 2166062521397. The next prime is 2166062521451. The reversal of 2166062521408 is 8041252606612.

It can be written as a sum of positive squares in 2 ways, for example, as 1250657515584 + 915405005824 = 1118328^2 + 956768^2 .

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, 144223 + ... + 2086366.

Almost surely, 2^{2166062521408} is an apocalyptic number.

It is an amenable number.

2166062521408 is a deficient number, since it is larger than the sum of its proper divisors (2132503006412).

2166062521408 is a wasteful number, since it uses less digits than its factorization.

2166062521408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2245774 (or 2245764 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 43.

The spelling of 2166062521408 in words is "two trillion, one hundred sixty-six billion, sixty-two million, five hundred twenty-one thousand, four hundred eight".