421335280788 has 24 divisors (see below), whose sum is σ = 983158538880. Its totient is φ = 140438967360.

The previous prime is 421335280763. The next prime is 421335280799. The reversal of 421335280788 is 887082533124.

It is a self number, because there is not a number n which added to its sum of digits gives 421335280788.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 474793 + ... + 1033488.

It is an arithmetic number, because the mean of its divisors is an integer number (40964939120).

Almost surely, 2^421335280788 is an apocalyptic number.

It is an amenable number.

421335280788 is an abundant number, since it is smaller than the sum of its proper divisors (561823258092).

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

421335280788 is a wasteful number, since it uses less digits than its factorization.

421335280788 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1531567 (or 1531565 counting only the distinct ones).

The product of its (nonzero) digits is 2580480, while the sum is 51.

The spelling of 421335280788 in words is "four hundred twenty-one billion, three hundred thirty-five million, two hundred eighty thousand, seven hundred eighty-eight".