320605252972 has 6 divisors (see below), whose sum is σ = 561059192708. Its totient is φ = 160302626484.

The previous prime is 320605252951. The next prime is 320605252991. The reversal of 320605252972 is 279252506023.

It is a super-2 number, since 2×320605252972² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40075656618 + ... + 40075656625.

Almost surely, 2^320605252972 is an apocalyptic number.

It is an amenable number.

320605252972 is a deficient number, since it is larger than the sum of its proper divisors (240453939736).

320605252972 is a wasteful number, since it uses less digits than its factorization.

320605252972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80151313247 (or 80151313245 counting only the distinct ones).

The product of its (nonzero) digits is 453600, while the sum is 43.

Adding to 320605252972 its reverse (279252506023), we get a palindrome (599857758995).

The spelling of 320605252972 in words is "three hundred twenty billion, six hundred five million, two hundred fifty-two thousand, nine hundred seventy-two".