164254139513 has 4 divisors (see below), whose sum is σ = 164619962100. Its totient is φ = 163888316928.

The previous prime is 164254139477. The next prime is 164254139531. The reversal of 164254139513 is 315931452461.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 114143973904 + 50110165609 = 337852^2 + 223853^2 .

It is a cyclic number.

It is not a de Polignac number, because 164254139513 - 2²⁶ = 164187030649 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (164254139113) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 182910620 + ... + 182911517.

It is an arithmetic number, because the mean of its divisors is an integer number (41154990525).

Almost surely, 2^164254139513 is an apocalyptic number.

It is an amenable number.

164254139513 is a deficient number, since it is larger than the sum of its proper divisors (365822587).

164254139513 is an equidigital number, since it uses as much as digits as its factorization.

164254139513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 365822586.

The product of its digits is 388800, while the sum is 44.

The spelling of 164254139513 in words is "one hundred sixty-four billion, two hundred fifty-four million, one hundred thirty-nine thousand, five hundred thirteen".