508921867422 has 72 divisors (see below), whose sum is σ = 1163267905800. Its totient is φ = 160775946144.

The previous prime is 508921867403. The next prime is 508921867451. The reversal of 508921867422 is 224768129805.

508921867422 is a `hidden beast` number, since 50 + 8 + 92 + 1 + 86 + 7 + 422 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 792729 + ... + 1283067.

Almost surely, 2^508921867422 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 508921867422, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (581633952900).

508921867422 is an abundant number, since it is smaller than the sum of its proper divisors (654346038378).

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

508921867422 is a wasteful number, since it uses less digits than its factorization.

508921867422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 490502 (or 490476 counting only the distinct ones).

The product of its (nonzero) digits is 3870720, while the sum is 54.

The spelling of 508921867422 in words is "five hundred eight billion, nine hundred twenty-one million, eight hundred sixty-seven thousand, four hundred twenty-two".