421335278664 has 32 divisors (see below), whose sum is σ = 1053716040000. Its totient is φ = 140394713792.

The previous prime is 421335278537. The next prime is 421335278681. The reversal of 421335278664 is 466872533124.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3080364 + ... + 3214235.

It is an arithmetic number, because the mean of its divisors is an integer number (32928626250).

Almost surely, 2^421335278664 is an apocalyptic number.

It is an amenable number.

421335278664 is an abundant number, since it is smaller than the sum of its proper divisors (632380761336).

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

421335278664 is a wasteful number, since it uses less digits than its factorization.

421335278664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6297397 (or 6297393 counting only the distinct ones).

The product of its digits is 5806080, while the sum is 51.

The spelling of 421335278664 in words is "four hundred twenty-one billion, three hundred thirty-five million, two hundred seventy-eight thousand, six hundred sixty-four".