321154968906 has 32 divisors (see below), whose sum is σ = 716311238400. Its totient is φ = 106656626880.

The previous prime is 321154968889. The next prime is 321154968913. The reversal of 321154968906 is 609869451123.

321154968906 is a `hidden beast` number, since 3 + 2 + 1 + 1 + 549 + 6 + 8 + 90 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10958271 + ... + 10987538.

It is an arithmetic number, because the mean of its divisors is an integer number (22384726200).

Almost surely, 2^321154968906 is an apocalyptic number.

321154968906 is an abundant number, since it is smaller than the sum of its proper divisors (395156269494).

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

321154968906 is a wasteful number, since it uses less digits than its factorization.

321154968906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21946091 (or 21946085 counting only the distinct ones).

The product of its (nonzero) digits is 2799360, while the sum is 54.

The spelling of 321154968906 in words is "three hundred twenty-one billion, one hundred fifty-four million, nine hundred sixty-eight thousand, nine hundred six".