12421887456 has 96 divisors (see below), whose sum is σ = 36533282688. Its totient is φ = 3662461440.

The previous prime is 12421887427. The next prime is 12421887503. The reversal of 12421887456 is 65478812421.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 119890 + ... + 198033.

It is an arithmetic number, because the mean of its divisors is an integer number (380555028).

Almost surely, 2^12421887456 is an apocalyptic number.

12421887456 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

12421887456 is an abundant number, since it is smaller than the sum of its proper divisors (24111395232).

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

12421887456 is a wasteful number, since it uses less digits than its factorization.

12421887456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 317984 (or 317976 counting only the distinct ones).

The product of its digits is 860160, while the sum is 48.

The spelling of 12421887456 in words is "twelve billion, four hundred twenty-one million, eight hundred eighty-seven thousand, four hundred fifty-six".