20320002572 has 6 divisors (see below), whose sum is σ = 35560004508. Its totient is φ = 10160001284.

The previous prime is 20320002559. The next prime is 20320002587. The reversal of 20320002572 is 27520002302.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2540000318 + ... + 2540000325.

It is an arithmetic number, because the mean of its divisors is an integer number (5926667418).

Almost surely, 2^20320002572 is an apocalyptic number.

It is an amenable number.

20320002572 is a deficient number, since it is larger than the sum of its proper divisors (15240001936).

20320002572 is a wasteful number, since it uses less digits than its factorization.

20320002572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5080000647 (or 5080000645 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 23.

Adding to 20320002572 its reverse (27520002302), we get a palindrome (47840004874).

The spelling of 20320002572 in words is "twenty billion, three hundred twenty million, two thousand, five hundred seventy-two".