421912388736 has 512 divisors, whose sum is σ = 1377898905600. Its totient is φ = 126506188800.

The previous prime is 421912388659. The next prime is 421912388741. The reversal of 421912388736 is 637883219124.

It is a happy number.

421912388736 is a `hidden beast` number, since 4 + 2 + 191 + 2 + 388 + 73 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 151167501 + ... + 151170291.

It is an arithmetic number, because the mean of its divisors is an integer number (2691208800).

Almost surely, 2^421912388736 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 421912388736, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (688949452800).

421912388736 is an abundant number, since it is smaller than the sum of its proper divisors (955986516864).

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

421912388736 is a wasteful number, since it uses less digits than its factorization.

421912388736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2945 (or 2927 counting only the distinct ones).

The product of its digits is 3483648, while the sum is 54.

The spelling of 421912388736 in words is "four hundred twenty-one billion, nine hundred twelve million, three hundred eighty-eight thousand, seven hundred thirty-six".