128156875750 has 32 divisors (see below), whose sum is σ = 254022013440. Its totient is φ = 48247292800.

The previous prime is 128156875747. The next prime is 128156875751. The reversal of 128156875750 is 57578651821.

It is a junction number, because it is equal to n+sod(n) for n = 128156875691 and 128156875700.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128156875751) 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, 15073030 + ... + 15081529.

It is an arithmetic number, because the mean of its divisors is an integer number (7938187920).

Almost surely, 2^128156875750 is an apocalyptic number.

128156875750 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

128156875750 is a deficient number, since it is larger than the sum of its proper divisors (125865137690).

128156875750 is a wasteful number, since it uses less digits than its factorization.

128156875750 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30154593 (or 30154583 counting only the distinct ones).

The product of its (nonzero) digits is 4704000, while the sum is 55.

The spelling of 128156875750 in words is "one hundred twenty-eight billion, one hundred fifty-six million, eight hundred seventy-five thousand, seven hundred fifty".