128183961830 has 32 divisors (see below), whose sum is σ = 231199768800. Its totient is φ = 51169542912.

The previous prime is 128183961821. The next prime is 128183961853. The reversal of 128183961830 is 38169381821.

It is a super-2 number, since 2×128183961830² (a number of 23 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (50) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

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, 12801866 + ... + 12811874.

It is an arithmetic number, because the mean of its divisors is an integer number (7224992775).

Almost surely, 2^128183961830 is an apocalyptic number.

128183961830 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

128183961830 is a deficient number, since it is larger than the sum of its proper divisors (103015806970).

128183961830 is a wasteful number, since it uses less digits than its factorization.

128183961830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12488.

The product of its (nonzero) digits is 497664, while the sum is 50.

The spelling of 128183961830 in words is "one hundred twenty-eight billion, one hundred eighty-three million, nine hundred sixty-one thousand, eight hundred thirty".