12495912420 has 96 divisors (see below), whose sum is σ = 36598625280. Its totient is φ = 3179608960.

The previous prime is 12495912413. The next prime is 12495912421. The reversal of 12495912420 is 2421959421.

It is a super-2 number, since 2×12495912420² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12495912421) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 567415 + ... + 589025.

It is an arithmetic number, because the mean of its divisors is an integer number (381235680).

Almost surely, 2^12495912420 is an apocalyptic number.

12495912420 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 12495912420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18299312640).

12495912420 is an abundant number, since it is smaller than the sum of its proper divisors (24102712860).

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

12495912420 is a wasteful number, since it uses less digits than its factorization.

12495912420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22065 (or 22063 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 39.

The spelling of 12495912420 in words is "twelve billion, four hundred ninety-five million, nine hundred twelve thousand, four hundred twenty".