2166524736464 has 40 divisors (see below), whose sum is σ = 4587379326432. Its totient is φ = 983034753920.

The previous prime is 2166524736437. The next prime is 2166524736521. The reversal of 2166524736464 is 4646374256612.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10833239 + ... + 11031414.

Almost surely, 2^{2166524736464} is an apocalyptic number.

It is an amenable number.

2166524736464 is an abundant number, since it is smaller than the sum of its proper divisors (2420854589968).

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

2166524736464 is a wasteful number, since it uses less digits than its factorization.

2166524736464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21865235 (or 21865229 counting only the distinct ones).

The product of its digits is 34836480, while the sum is 56.

The spelling of 2166524736464 in words is "two trillion, one hundred sixty-six billion, five hundred twenty-four million, seven hundred thirty-six thousand, four hundred sixty-four".