128131736524 has 48 divisors (see below), whose sum is σ = 259107478560. Its totient is φ = 54793871360.

The previous prime is 128131736519. The next prime is 128131736543. The reversal of 128131736524 is 425637131821.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1918704 + ... + 1984360.

It is an arithmetic number, because the mean of its divisors is an integer number (5398072470).

Almost surely, 2^128131736524 is an apocalyptic number.

It is an amenable number.

128131736524 is an abundant number, since it is smaller than the sum of its proper divisors (130975742036).

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

128131736524 is a wasteful number, since it uses less digits than its factorization.

128131736524 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68298 (or 68296 counting only the distinct ones).

The product of its digits is 241920, while the sum is 43.

The spelling of 128131736524 in words is "one hundred twenty-eight billion, one hundred thirty-one million, seven hundred thirty-six thousand, five hundred twenty-four".