135979391635 has 8 divisors (see below), whose sum is σ = 163177254000. Its totient is φ = 108782190624.

The previous prime is 135979391627. The next prime is 135979391651. The reversal of 135979391635 is 536193979531.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 135979391635 - 2³ = 135979391627 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 678909 + ... + 856081.

It is an arithmetic number, because the mean of its divisors is an integer number (20397156750).

Almost surely, 2^135979391635 is an apocalyptic number.

135979391635 is a deficient number, since it is larger than the sum of its proper divisors (27197862365).

135979391635 is a wasteful number, since it uses less digits than its factorization.

135979391635 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 330677.

The product of its digits is 20667150, while the sum is 61.

The spelling of 135979391635 in words is "one hundred thirty-five billion, nine hundred seventy-nine million, three hundred ninety-one thousand, six hundred thirty-five".