908691216420 has 96 divisors (see below), whose sum is σ = 2741117137920. Its totient is φ = 223591011840.

The previous prime is 908691216379. The next prime is 908691216527. The reversal of 908691216420 is 24612196809.

It is a self number, because there is not a number n which added to its sum of digits gives 908691216420.

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, 1796166 + ... + 2245794.

It is an arithmetic number, because the mean of its divisors is an integer number (28553303520).

Almost surely, 2^908691216420 is an apocalyptic number.

It is an amenable number.

908691216420 is an abundant number, since it is smaller than the sum of its proper divisors (1832425921500).

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

908691216420 is a wasteful number, since it uses less digits than its factorization.

908691216420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 452245 (or 452243 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 48.

The spelling of 908691216420 in words is "nine hundred eight billion, six hundred ninety-one million, two hundred sixteen thousand, four hundred twenty".