12420013662 has 160 divisors (see below), whose sum is σ = 34261438464. Its totient is φ = 3284582400.

The previous prime is 12420013649. The next prime is 12420013673. The reversal of 12420013662 is 26631002421.

It is a Harshad number since it is a multiple of its sum of digits (27).

12420013662 is a modest number, since divided by 13662 gives 12420 as remainder.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 800862 + ... + 816222.

Almost surely, 2^12420013662 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12420013662, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17130719232).

12420013662 is an abundant number, since it is smaller than the sum of its proper divisors (21841424802).

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

12420013662 is a wasteful number, since it uses less digits than its factorization.

12420013662 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15436 (or 15427 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The spelling of 12420013662 in words is "twelve billion, four hundred twenty million, thirteen thousand, six hundred sixty-two".