12432990980 has 24 divisors (see below), whose sum is σ = 26114523288. Its totient is φ = 4972197888.

The previous prime is 12432990961. The next prime is 12432990989. The reversal of 12432990980 is 8909923421.

It can be written as a sum of positive squares in 4 ways, for example, as 1349533696 + 11083457284 = 36736^2 + 105278^2 .

It is a super-2 number, since 2×12432990980² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12432990989) 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, 44132 + ... + 163748.

It is an arithmetic number, because the mean of its divisors is an integer number (1088105137).

Almost surely, 2^12432990980 is an apocalyptic number.

12432990980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12432990980 is an abundant number, since it is smaller than the sum of its proper divisors (13681532308).

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

12432990980 is a wasteful number, since it uses less digits than its factorization.

12432990980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124823 (or 124821 counting only the distinct ones).

The product of its (nonzero) digits is 279936, while the sum is 47.

The spelling of 12432990980 in words is "twelve billion, four hundred thirty-two million, nine hundred ninety thousand, nine hundred eighty".