128725194312 has 96 divisors (see below), whose sum is σ = 409580196480. Its totient is φ = 36007044480.

The previous prime is 128725194277. The next prime is 128725194329. The reversal of 128725194312 is 213491527821.

128725194312 is a `hidden beast` number, since 1 + 2 + 87 + 2 + 519 + 43 + 12 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6240928 + ... + 6261519.

It is an arithmetic number, because the mean of its divisors is an integer number (4266460380).

Almost surely, 2^128725194312 is an apocalyptic number.

128725194312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

128725194312 is an abundant number, since it is smaller than the sum of its proper divisors (280855002168).

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

128725194312 is a wasteful number, since it uses less digits than its factorization.

128725194312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12502483 (or 12502476 counting only the distinct ones).

The product of its digits is 241920, while the sum is 45.

The spelling of 128725194312 in words is "one hundred twenty-eight billion, seven hundred twenty-five million, one hundred ninety-four thousand, three hundred twelve".