2166520504 has 16 divisors (see below), whose sum is σ = 4062739320. Its totient is φ = 1083123360.

The previous prime is 2166520501. The next prime is 2166520547. The reversal of 2166520504 is 4050256612.

It is a super-2 number, since 2×2166520504² = 9387622188504828032, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2166520501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 88467 + ... + 110269.

Almost surely, 2^2166520504 is an apocalyptic number.

It is an amenable number.

2166520504 is a deficient number, since it is larger than the sum of its proper divisors (1896218816).

2166520504 is a wasteful number, since it uses less digits than its factorization.

2166520504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34230 (or 34226 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 31.

The square root of 2166520504 is about 46545.8967471892. The cubic root of 2166520504 is about 1293.9602480807.

The spelling of 2166520504 in words is "two billion, one hundred sixty-six million, five hundred twenty thousand, five hundred four".