12351317620 has 24 divisors (see below), whose sum is σ = 26303090688. Its totient is φ = 4870941600.

The previous prime is 12351317557. The next prime is 12351317621. The reversal of 12351317620 is 2671315321.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12351317621) 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, 4347636 + ... + 4350475.

It is an arithmetic number, because the mean of its divisors is an integer number (1095962112).

Almost surely, 2^12351317620 is an apocalyptic number.

12351317620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12351317620 is an abundant number, since it is smaller than the sum of its proper divisors (13951773068).

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

12351317620 is a wasteful number, since it uses less digits than its factorization.

12351317620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8698191 (or 8698189 counting only the distinct ones).

The product of its (nonzero) digits is 7560, while the sum is 31.

The spelling of 12351317620 in words is "twelve billion, three hundred fifty-one million, three hundred seventeen thousand, six hundred twenty".