156532401013 has 4 divisors (see below), whose sum is σ = 156534958188. Its totient is φ = 156529843840.

The previous prime is 156532400993. The next prime is 156532401019. The reversal of 156532401013 is 310104235651.

156532401013 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 88219692324 + 68312708689 = 297018^2 + 261367^2 .

It is a cyclic number.

It is not a de Polignac number, because 156532401013 - 2³³ = 147942466421 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 (156532401019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1184458 + ... + 1309963.

It is an arithmetic number, because the mean of its divisors is an integer number (39133739547).

Almost surely, 2^156532401013 is an apocalyptic number.

It is an amenable number.

156532401013 is a deficient number, since it is larger than the sum of its proper divisors (2557175).

156532401013 is an equidigital number, since it uses as much as digits as its factorization.

156532401013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2557174.

The product of its (nonzero) digits is 10800, while the sum is 31.

Adding to 156532401013 its reverse (310104235651), we get a palindrome (466636636664).

The spelling of 156532401013 in words is "one hundred fifty-six billion, five hundred thirty-two million, four hundred one thousand, thirteen".