135197044608 has 128 divisors (see below), whose sum is σ = 368815680000. Its totient is φ = 43859382272.

The previous prime is 135197044607. The next prime is 135197044639. The reversal of 135197044608 is 806440791531.

It is a tau number, because it is divible by the number of its divisors (128).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135197044603) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3209668 + ... + 3251516.

It is an arithmetic number, because the mean of its divisors is an integer number (2881372500).

Almost surely, 2^135197044608 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 135197044608, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (184407840000).

135197044608 is an abundant number, since it is smaller than the sum of its proper divisors (233618635392).

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

135197044608 is a wasteful number, since it uses less digits than its factorization.

135197044608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42092 (or 42080 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 48.

The spelling of 135197044608 in words is "one hundred thirty-five billion, one hundred ninety-seven million, forty-four thousand, six hundred eight".