164553939833 has 2 divisors, whose sum is σ = 164553939834. Its totient is φ = 164553939832.

The previous prime is 164553939821. The next prime is 164553939929. The reversal of 164553939833 is 338939355461.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 126432158329 + 38121781504 = 355573^2 + 195248^2 .

It is a cyclic number.

It is not a de Polignac number, because 164553939833 - 2⁶ = 164553939769 is a prime.

It is a super-2 number, since 2×164553939833² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (164553909833) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82276969916 + 82276969917.

It is an arithmetic number, because the mean of its divisors is an integer number (82276969917).

Almost surely, 2^164553939833 is an apocalyptic number.

It is an amenable number.

164553939833 is a deficient number, since it is larger than the sum of its proper divisors (1).

164553939833 is an equidigital number, since it uses as much as digits as its factorization.

164553939833 is an evil number, because the sum of its binary digits is even.

The product of its digits is 31492800, while the sum is 59.

The spelling of 164553939833 in words is "one hundred sixty-four billion, five hundred fifty-three million, nine hundred thirty-nine thousand, eight hundred thirty-three".