320972306904 has 48 divisors (see below), whose sum is σ = 897341939520. Its totient is φ = 103539453120.

The previous prime is 320972306903. The next prime is 320972306911. The reversal of 320972306904 is 409603279023.

320972306904 is a `hidden beast` number, since 320 + 9 + 7 + 230 + 6 + 90 + 4 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 320972306904.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320972306903) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 71900167 + ... + 71904630.

It is an arithmetic number, because the mean of its divisors is an integer number (18694623740).

Almost surely, 2^320972306904 is an apocalyptic number.

It is an amenable number.

320972306904 is an abundant number, since it is smaller than the sum of its proper divisors (576369632616).

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

320972306904 is a wasteful number, since it uses less digits than its factorization.

320972306904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143804840 (or 143804833 counting only the distinct ones).

The product of its (nonzero) digits is 489888, while the sum is 45.

The spelling of 320972306904 in words is "three hundred twenty billion, nine hundred seventy-two million, three hundred six thousand, nine hundred four".