135139774944 has 48 divisors (see below), whose sum is σ = 354760826112. Its totient is φ = 45044189568.

The previous prime is 135139774919. The next prime is 135139774951. The reversal of 135139774944 is 449477931531.

135139774944 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

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, 3486937 + ... + 3525479.

It is an arithmetic number, because the mean of its divisors is an integer number (7390850544).

Almost surely, 2^135139774944 is an apocalyptic number.

It is an amenable number.

135139774944 is an abundant number, since it is smaller than the sum of its proper divisors (219621051168).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

135139774944 is a wasteful number, since it uses less digits than its factorization.

135139774944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75079 (or 75071 counting only the distinct ones).

The product of its digits is 11430720, while the sum is 57.

The spelling of 135139774944 in words is "one hundred thirty-five billion, one hundred thirty-nine million, seven hundred seventy-four thousand, nine hundred forty-four".