421762336660 has 96 divisors (see below), whose sum is σ = 1037883974400. Its totient is φ = 140945894400.

The previous prime is 421762336657. The next prime is 421762336703. The reversal of 421762336660 is 66633267124.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 421762336660.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6228666 + ... + 6296014.

It is an arithmetic number, because the mean of its divisors is an integer number (10811291400).

Almost surely, 2^421762336660 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 421762336660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (518941987200).

421762336660 is an abundant number, since it is smaller than the sum of its proper divisors (616121637740).

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

421762336660 is a wasteful number, since it uses less digits than its factorization.

421762336660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68497 (or 68495 counting only the distinct ones).

The product of its (nonzero) digits is 1306368, while the sum is 46.

The spelling of 421762336660 in words is "four hundred twenty-one billion, seven hundred sixty-two million, three hundred thirty-six thousand, six hundred sixty".