12128750940 has 24 divisors (see below), whose sum is σ = 33960502800. Its totient is φ = 3234333568.

The previous prime is 12128750897. The next prime is 12128750941. The reversal of 12128750940 is 4905782121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12128750941) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 101072865 + ... + 101072984.

It is an arithmetic number, because the mean of its divisors is an integer number (1415020950).

Almost surely, 2^12128750940 is an apocalyptic number.

12128750940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12128750940 is an abundant number, since it is smaller than the sum of its proper divisors (21831751860).

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

12128750940 is a wasteful number, since it uses less digits than its factorization.

12128750940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202145861 (or 202145859 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 39.

The spelling of 12128750940 in words is "twelve billion, one hundred twenty-eight million, seven hundred fifty thousand, nine hundred forty".