128597328690 has 16 divisors (see below), whose sum is σ = 308633588928. Its totient is φ = 34292620976.

The previous prime is 128597328679. The next prime is 128597328703. The reversal of 128597328690 is 96823795821.

It is a super-2 number, since 2×128597328690² (a number of 23 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (60) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2143288782 + ... + 2143288841.

It is an arithmetic number, because the mean of its divisors is an integer number (19289599308).

Almost surely, 2^128597328690 is an apocalyptic number.

128597328690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

128597328690 is an abundant number, since it is smaller than the sum of its proper divisors (180036260238).

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

128597328690 is a wasteful number, since it uses less digits than its factorization.

128597328690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4286577633.

The product of its (nonzero) digits is 13063680, while the sum is 60.

The spelling of 128597328690 in words is "one hundred twenty-eight billion, five hundred ninety-seven million, three hundred twenty-eight thousand, six hundred ninety".