20304579572 has 6 divisors (see below), whose sum is σ = 35533014258. Its totient is φ = 10152289784.

The previous prime is 20304579553. The next prime is 20304579613. The reversal of 20304579572 is 27597540302.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 20156616676 + 147962896 = 141974^2 + 12164^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2538072443 + ... + 2538072450.

It is an arithmetic number, because the mean of its divisors is an integer number (5922169043).

Almost surely, 2^20304579572 is an apocalyptic number.

It is an amenable number.

20304579572 is a deficient number, since it is larger than the sum of its proper divisors (15228434686).

20304579572 is a wasteful number, since it uses less digits than its factorization.

20304579572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5076144897 (or 5076144895 counting only the distinct ones).

The product of its (nonzero) digits is 529200, while the sum is 44.

The spelling of 20304579572 in words is "twenty billion, three hundred four million, five hundred seventy-nine thousand, five hundred seventy-two".