131405345135536 has 20 divisors (see below), whose sum is σ = 257820613876000. Its totient is φ = 64870993167552.

The previous prime is 131405345135513. The next prime is 131405345135587. The reversal of 131405345135536 is 635531543504131.

131405345135536 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 131405345135536.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51979961211 + ... + 51979963738.

It is an arithmetic number, because the mean of its divisors is an integer number (12891030693800).

Almost surely, 2^{131405345135536} is an apocalyptic number.

131405345135536 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

131405345135536 is a deficient number, since it is larger than the sum of its proper divisors (126415268740464).

131405345135536 is a wasteful number, since it uses less digits than its factorization.

131405345135536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103959925036 (or 103959925030 counting only the distinct ones).

The product of its (nonzero) digits is 4860000, while the sum is 49.

Adding to 131405345135536 its reverse (635531543504131), we get a palindrome (766936888639667).

The spelling of 131405345135536 in words is "one hundred thirty-one trillion, four hundred five billion, three hundred forty-five million, one hundred thirty-five thousand, five hundred thirty-six".