128264406700 has 36 divisors (see below), whose sum is σ = 294706340712. Its totient is φ = 48287776000.

The previous prime is 128264406679. The next prime is 128264406709. The reversal of 128264406700 is 7604462821.

It is a happy number.

It is a super-2 number, since 2×128264406700² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (128264406709) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 37723126 + ... + 37726525.

It is an arithmetic number, because the mean of its divisors is an integer number (8186287242).

Almost surely, 2^128264406700 is an apocalyptic number.

128264406700 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

128264406700 is an abundant number, since it is smaller than the sum of its proper divisors (166441934012).

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

128264406700 is a wasteful number, since it uses less digits than its factorization.

128264406700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75449682 (or 75449675 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 40.

The spelling of 128264406700 in words is "one hundred twenty-eight billion, two hundred sixty-four million, four hundred six thousand, seven hundred".