128355152472 has 72 divisors (see below), whose sum is σ = 360980673300. Its totient is φ = 42785033328.

The previous prime is 128355152417. The next prime is 128355152473. The reversal of 128355152472 is 274251553821.

128355152472 is a `hidden beast` number, since 1 + 2 + 8 + 3 + 5 + 51 + 524 + 72 = 666.

It is a tau number, because it is divible by the number of its divisors (72).

It is a super-2 number, since 2×128355152472² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128355152473) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 1170222 + ... + 1275197.

Almost surely, 2^128355152472 is an apocalyptic number.

128355152472 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

128355152472 is an abundant number, since it is smaller than the sum of its proper divisors (232625520828).

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

128355152472 is an frugal number, since it uses more digits than its factorization.

128355152472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2445449 (or 2445424 counting only the distinct ones).

The product of its digits is 672000, while the sum is 45.

The spelling of 128355152472 in words is "one hundred twenty-eight billion, three hundred fifty-five million, one hundred fifty-two thousand, four hundred seventy-two".