155516506505013 has 16 divisors (see below), whose sum is σ = 207879862949120. Its totient is φ = 103415416099776.

The previous prime is 155516506504967. The next prime is 155516506505081. The reversal of 155516506505013 is 310505605615551.

It is not a de Polignac number, because 155516506505013 - 2⁸ = 155516506504757 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155516506505413) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 119880468 + ... + 121170786.

It is an arithmetic number, because the mean of its divisors is an integer number (12992491434320).

Almost surely, 2^{155516506505013} is an apocalyptic number.

It is an amenable number.

155516506505013 is a deficient number, since it is larger than the sum of its proper divisors (52363356444107).

155516506505013 is a wasteful number, since it uses less digits than its factorization.

155516506505013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1391916.

The product of its (nonzero) digits is 1687500, while the sum is 48.

The spelling of 155516506505013 in words is "one hundred fifty-five trillion, five hundred sixteen billion, five hundred six million, five hundred five thousand, thirteen".