2164500236205 has 48 divisors (see below), whose sum is σ = 3931615275840. Its totient is φ = 1129838265504.

The previous prime is 2164500236113. The next prime is 2164500236233. The reversal of 2164500236205 is 5026320054612.

2164500236205 is a `hidden beast` number, since 2 + 1 + 6 + 4 + 5 + 0 + 0 + 23 + 620 + 5 = 666.

It is not a de Polignac number, because 2164500236205 - 2¹⁰ = 2164500235181 is a prime.

It is a super-2 number, since 2×2164500236205² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2164500236205.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3330879 + ... + 3927308.

It is an arithmetic number, because the mean of its divisors is an integer number (81908651580).

Almost surely, 2^{2164500236205} is an apocalyptic number.

It is an amenable number.

2164500236205 is a deficient number, since it is larger than the sum of its proper divisors (1767115039635).

2164500236205 is an equidigital number, since it uses as much as digits as its factorization.

2164500236205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7258295 (or 7258242 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 36.

The spelling of 2164500236205 in words is "two trillion, one hundred sixty-four billion, five hundred million, two hundred thirty-six thousand, two hundred five".