12421791486 has 48 divisors (see below), whose sum is σ = 29459364480. Its totient is φ = 3759428160.

The previous prime is 12421791479. The next prime is 12421791517. The reversal of 12421791486 is 68419712421.

12421791486 is a `hidden beast` number, since 12 + 421 + 79 + 148 + 6 = 666.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 420846 + ... + 449393.

It is an arithmetic number, because the mean of its divisors is an integer number (613736760).

Almost surely, 2^12421791486 is an apocalyptic number.

12421791486 is an abundant number, since it is smaller than the sum of its proper divisors (17037572994).

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

12421791486 is a wasteful number, since it uses less digits than its factorization.

12421791486 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 870321 (or 870318 counting only the distinct ones).

The product of its digits is 193536, while the sum is 45.

The spelling of 12421791486 in words is "twelve billion, four hundred twenty-one million, seven hundred ninety-one thousand, four hundred eighty-six".