2166374553 has 32 divisors (see below), whose sum is σ = 3347101440. Its totient is φ = 1220793600.

The previous prime is 2166374527. The next prime is 2166374563. The reversal of 2166374553 is 3554736612.

It is not a de Polignac number, because 2166374553 - 2¹⁶ = 2166309017 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2166374563) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 568651 + ... + 572447.

It is an arithmetic number, because the mean of its divisors is an integer number (104596920).

Almost surely, 2^2166374553 is an apocalyptic number.

It is an amenable number.

2166374553 is a deficient number, since it is larger than the sum of its proper divisors (1180726887).

2166374553 is a wasteful number, since it uses less digits than its factorization.

2166374553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4177.

The product of its digits is 453600, while the sum is 42.

The square root of 2166374553 is about 46544.3289026708. The cubic root of 2166374553 is about 1293.9311908846.

The spelling of 2166374553 in words is "two billion, one hundred sixty-six million, three hundred seventy-four thousand, five hundred fifty-three".