128967138732 has 18 divisors (see below), whose sum is σ = 300926226468. Its totient is φ = 42988631568.

The previous prime is 128967138721. The next prime is 128967138757. The reversal of 128967138732 is 237831769821.

It is a Smith number, since the sum of its digits (57) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1192194 + ... + 1295862.

Almost surely, 2^128967138732 is an apocalyptic number.

128967138732 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

128967138732 is an abundant number, since it is smaller than the sum of its proper divisors (171959087736).

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

128967138732 is an frugal number, since it uses more digits than its factorization.

128967138732 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 207345 (or 103674 counting only the distinct ones).

The product of its digits is 6096384, while the sum is 57.

The spelling of 128967138732 in words is "one hundred twenty-eight billion, nine hundred sixty-seven million, one hundred thirty-eight thousand, seven hundred thirty-two".