136521807575 has 6 divisors (see below), whose sum is σ = 169287041424. Its totient is φ = 109217446040.

The previous prime is 136521807511. The next prime is 136521807599. The reversal of 136521807575 is 575708125631.

It is not a de Polignac number, because 136521807575 - 2⁶ = 136521807511 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2730436127 + ... + 2730436176.

It is an arithmetic number, because the mean of its divisors is an integer number (28214506904).

Almost surely, 2^136521807575 is an apocalyptic number.

136521807575 is a deficient number, since it is larger than the sum of its proper divisors (32765233849).

136521807575 is an equidigital number, since it uses as much as digits as its factorization.

136521807575 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5460872313 (or 5460872308 counting only the distinct ones).

The product of its (nonzero) digits is 1764000, while the sum is 50.

The spelling of 136521807575 in words is "one hundred thirty-six billion, five hundred twenty-one million, eight hundred seven thousand, five hundred seventy-five".