155860013013 has 4 divisors (see below), whose sum is σ = 207813350688. Its totient is φ = 103906675340.

The previous prime is 155860012967. The next prime is 155860013033. The reversal of 155860013013 is 310310068551.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 155860013013 - 2⁶ = 155860012949 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155860013033) 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, 25976668833 + ... + 25976668838.

It is an arithmetic number, because the mean of its divisors is an integer number (51953337672).

Almost surely, 2^155860013013 is an apocalyptic number.

It is an amenable number.

155860013013 is a deficient number, since it is larger than the sum of its proper divisors (51953337675).

155860013013 is an equidigital number, since it uses as much as digits as its factorization.

155860013013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51953337674.

The product of its (nonzero) digits is 10800, while the sum is 33.

The spelling of 155860013013 in words is "one hundred fifty-five billion, eight hundred sixty million, thirteen thousand, thirteen".