155405010003013 has 4 divisors (see below), whose sum is σ = 157724487764320. Its totient is φ = 153085532241708.

The previous prime is 155405010003007. The next prime is 155405010003031. The reversal of 155405010003013 is 310300010504551.

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 155405010003013 - 2²⁵ = 155404976448581 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 (155405010003083) 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, 1159738880553 + ... + 1159738880686.

It is an arithmetic number, because the mean of its divisors is an integer number (39431121941080).

Almost surely, 2^{155405010003013} is an apocalyptic number.

It is an amenable number.

155405010003013 is a deficient number, since it is larger than the sum of its proper divisors (2319477761307).

155405010003013 is an equidigital number, since it uses as much as digits as its factorization.

155405010003013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2319477761306.

The product of its (nonzero) digits is 4500, while the sum is 28.

Adding to 155405010003013 its reverse (310300010504551), we get a palindrome (465705020507564).

The spelling of 155405010003013 in words is "one hundred fifty-five trillion, four hundred five billion, ten million, three thousand, thirteen".