421745464729344 has 432 divisors, whose sum is σ = 1328168352462336. Its totient is φ = 116379099832320.

The previous prime is 421745464729319. The next prime is 421745464729397. The reversal of 421745464729344 is 443927464547124.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2598585862 + ... + 2598748154.

It is an arithmetic number, because the mean of its divisors is an integer number (3074463778848).

Almost surely, 2^{421745464729344} 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 421745464729344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (664084176231168).

421745464729344 is an abundant number, since it is smaller than the sum of its proper divisors (906422887732992).

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

421745464729344 is a wasteful number, since it uses less digits than its factorization.

421745464729344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162884 (or 162839 counting only the distinct ones).

The product of its digits is 650280960, while the sum is 66.

The spelling of 421745464729344 in words is "four hundred twenty-one trillion, seven hundred forty-five billion, four hundred sixty-four million, seven hundred twenty-nine thousand, three hundred forty-four".