128225956392 has 64 divisors (see below), whose sum is σ = 356480505600. Its totient is φ = 42706310400.

The previous prime is 128225956373. The next prime is 128225956421. The reversal of 128225956392 is 293659522821.

It is a happy number.

128225956392 is a `hidden beast` number, since 1 + 2 + 8 + 22 + 59 + 563 + 9 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

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, 12273 + ... + 506559.

It is an arithmetic number, because the mean of its divisors is an integer number (5570007900).

Almost surely, 2^128225956392 is an apocalyptic number.

128225956392 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

128225956392 is an abundant number, since it is smaller than the sum of its proper divisors (228254549208).

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

128225956392 is a wasteful number, since it uses less digits than its factorization.

128225956392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 495503 (or 495493 counting only the distinct ones).

The product of its digits is 4665600, while the sum is 54.

The spelling of 128225956392 in words is "one hundred twenty-eight billion, two hundred twenty-five million, nine hundred fifty-six thousand, three hundred ninety-two".