135639307461 has 128 divisors (see below), whose sum is σ = 229428428800. Its totient is φ = 69544500480.

The previous prime is 135639307429. The next prime is 135639307469. The reversal of 135639307461 is 164703936531.

It is not a de Polignac number, because 135639307461 - 2⁵ = 135639307429 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 135639307461.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135639307469) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 124097631 + ... + 124098723.

It is an arithmetic number, because the mean of its divisors is an integer number (1792409600).

Almost surely, 2^135639307461 is an apocalyptic number.

It is an amenable number.

135639307461 is a deficient number, since it is larger than the sum of its proper divisors (93789121339).

135639307461 is a wasteful number, since it uses less digits than its factorization.

135639307461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1359.

The product of its (nonzero) digits is 1224720, while the sum is 48.

The spelling of 135639307461 in words is "one hundred thirty-five billion, six hundred thirty-nine million, three hundred seven thousand, four hundred sixty-one".