2164554906813 has 48 divisors (see below), whose sum is σ = 3391022666304. Its totient is φ = 1322597687040.

The previous prime is 2164554906803. The next prime is 2164554906929. The reversal of 2164554906813 is 3186094554612.

2164554906813 is a `hidden beast` number, since 2 + 1 + 6 + 4 + 554 + 9 + 0 + 6 + 81 + 3 = 666.

It is not a de Polignac number, because 2164554906813 - 2⁵ = 2164554906781 is a prime.

It is a super-2 number, since 2×2164554906813² (a number of 25 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2164554906813.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2164554906803) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 9187870 + ... + 9420512.

It is an arithmetic number, because the mean of its divisors is an integer number (70646305548).

Almost surely, 2^{2164554906813} is an apocalyptic number.

It is an amenable number.

2164554906813 is a deficient number, since it is larger than the sum of its proper divisors (1226467759491).

2164554906813 is a wasteful number, since it uses less digits than its factorization.

2164554906813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 233226 (or 233223 counting only the distinct ones).

The product of its (nonzero) digits is 6220800, while the sum is 54.

The spelling of 2164554906813 in words is "two trillion, one hundred sixty-four billion, five hundred fifty-four million, nine hundred six thousand, eight hundred thirteen".