135904487827 has 4 divisors (see below), whose sum is σ = 135944569216. Its totient is φ = 135864406440.

The previous prime is 135904487749. The next prime is 135904487843. The reversal of 135904487827 is 728784409531.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 135904487827 - 2²⁷ = 135770270099 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (135904487627) 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, 20035608 + ... + 20042389.

It is an arithmetic number, because the mean of its divisors is an integer number (33986142304).

Almost surely, 2^135904487827 is an apocalyptic number.

135904487827 is a deficient number, since it is larger than the sum of its proper divisors (40081389).

135904487827 is an equidigital number, since it uses as much as digits as its factorization.

135904487827 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40081388.

The product of its (nonzero) digits is 13547520, while the sum is 58.

The spelling of 135904487827 in words is "one hundred thirty-five billion, nine hundred four million, four hundred eighty-seven thousand, eight hundred twenty-seven".