12431626320 has 80 divisors (see below), whose sum is σ = 38612117952. Its totient is φ = 3308728320.

The previous prime is 12431626297. The next prime is 12431626321. The reversal of 12431626320 is 2362613421.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12431626321) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 76000 + ... + 175040.

Almost surely, 2^12431626320 is an apocalyptic number.

12431626320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12431626320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19306058976).

12431626320 is an abundant number, since it is smaller than the sum of its proper divisors (26180491632).

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

12431626320 is a wasteful number, since it uses less digits than its factorization.

12431626320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99580 (or 99574 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 30.

The spelling of 12431626320 in words is "twelve billion, four hundred thirty-one million, six hundred twenty-six thousand, three hundred twenty".