128757115401972 has 96 divisors (see below), whose sum is σ = 305662276563840. Its totient is φ = 42178495756800.

The previous prime is 128757115401877. The next prime is 128757115402007. The reversal of 128757115401972 is 279104511757821.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 736623178 + ... + 736797950.

It is an arithmetic number, because the mean of its divisors is an integer number (3183982047540).

Almost surely, 2^{128757115401972} is an apocalyptic number.

128757115401972 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

128757115401972 is an abundant number, since it is smaller than the sum of its proper divisors (176905161161868).

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

128757115401972 is a wasteful number, since it uses less digits than its factorization.

128757115401972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179393 (or 179391 counting only the distinct ones).

The product of its (nonzero) digits is 9878400, while the sum is 60.

The spelling of 128757115401972 in words is "one hundred twenty-eight trillion, seven hundred fifty-seven billion, one hundred fifteen million, four hundred one thousand, nine hundred seventy-two".