421555714744320 has 2688 divisors, whose sum is σ = 1809099668966400. Its totient is φ = 92510147837952.

The previous prime is 421555714744319. The next prime is 421555714744343. The reversal of 421555714744320 is 23447417555124.

421555714744320 is a `hidden beast` number, since 4 + 2 + 1 + 5 + 5 + 57 + 147 + 443 + 2 + 0 = 666.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 60368851549 + ... + 60368858531.

Almost surely, 2^{421555714744320} is an apocalyptic number.

421555714744320 is a gapful number since it is divisible by the number (40) 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 421555714744320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (904549834483200).

421555714744320 is an abundant number, since it is smaller than the sum of its proper divisors (1387543954222080).

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

421555714744320 is a wasteful number, since it uses less digits than its factorization.

421555714744320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7085 (or 7042 counting only the distinct ones).

The product of its (nonzero) digits is 18816000, while the sum is 54.

The spelling of 421555714744320 in words is "four hundred twenty-one trillion, five hundred fifty-five billion, seven hundred fourteen million, seven hundred forty-four thousand, three hundred twenty".