135257949144 has 80 divisors (see below), whose sum is σ = 382323361200. Its totient is φ = 44672326848.

The previous prime is 135257949137. The next prime is 135257949163. The reversal of 135257949144 is 441949752531.

135257949144 is a `hidden beast` number, since 1 + 3 + 52 + 579 + 4 + 9 + 14 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 886852 + ... + 1028115.

It is an arithmetic number, because the mean of its divisors is an integer number (4779042015).

Almost surely, 2^135257949144 is an apocalyptic number.

It is an amenable number.

135257949144 is an abundant number, since it is smaller than the sum of its proper divisors (247065412056).

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

135257949144 is a wasteful number, since it uses less digits than its factorization.

135257949144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1915094 (or 1915081 counting only the distinct ones).

The product of its digits is 5443200, while the sum is 54.

The spelling of 135257949144 in words is "one hundred thirty-five billion, two hundred fifty-seven million, nine hundred forty-nine thousand, one hundred forty-four".