135617056479 has 24 divisors (see below), whose sum is σ = 198805488960. Its totient is φ = 89071377408.

The previous prime is 135617056469. The next prime is 135617056493. The reversal of 135617056479 is 974650716531.

135617056479 is a `hidden beast` number, since 1 + 3 + 5 + 6 + 1 + 7 + 0 + 564 + 79 = 666.

It is not a de Polignac number, because 135617056479 - 2¹¹ = 135617054431 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135617056469) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 116239 + ... + 533615.

It is an arithmetic number, because the mean of its divisors is an integer number (8283562040).

Almost surely, 2^135617056479 is an apocalyptic number.

135617056479 is a deficient number, since it is larger than the sum of its proper divisors (63188432481).

135617056479 is a wasteful number, since it uses less digits than its factorization.

135617056479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 417919 (or 417916 counting only the distinct ones).

The product of its (nonzero) digits is 4762800, while the sum is 54.

The spelling of 135617056479 in words is "one hundred thirty-five billion, six hundred seventeen million, fifty-six thousand, four hundred seventy-nine".