421515405660 has 48 divisors (see below), whose sum is σ = 1180455548832. Its totient is φ = 112383878400.

The previous prime is 421515405659. The next prime is 421515405697. The reversal of 421515405660 is 66504515124.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 294531 + ... + 964250.

It is an arithmetic number, because the mean of its divisors is an integer number (24592823934).

Almost surely, 2^421515405660 is an apocalyptic number.

It is an amenable number.

421515405660 is an abundant number, since it is smaller than the sum of its proper divisors (758940143172).

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

421515405660 is a wasteful number, since it uses less digits than its factorization.

421515405660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1264374 (or 1264372 counting only the distinct ones).

The product of its (nonzero) digits is 144000, while the sum is 39.

The spelling of 421515405660 in words is "four hundred twenty-one billion, five hundred fifteen million, four hundred five thousand, six hundred sixty".