135639074787 has 16 divisors (see below), whose sum is σ = 191272878720. Its totient is φ = 85260772800.

The previous prime is 135639074719. The next prime is 135639074867. The reversal of 135639074787 is 787470936531.

It is not a de Polignac number, because 135639074787 - 2¹² = 135639070691 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 135639074787.

It is not an unprimeable number, because it can be changed into a prime (135639074687) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5626914 + ... + 5650967.

It is an arithmetic number, because the mean of its divisors is an integer number (11954554920).

Almost surely, 2^135639074787 is an apocalyptic number.

135639074787 is a deficient number, since it is larger than the sum of its proper divisors (55633803933).

135639074787 is a wasteful number, since it uses less digits than its factorization.

135639074787 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11278114.

The product of its (nonzero) digits is 26671680, while the sum is 60.

The spelling of 135639074787 in words is "one hundred thirty-five billion, six hundred thirty-nine million, seventy-four thousand, seven hundred eighty-seven".