20365004723 has 16 divisors (see below), whose sum is σ = 23822008320. Its totient is φ = 17045150976.

The previous prime is 20365004711. The next prime is 20365004741. The reversal of 20365004723 is 32740056302.

It is not a de Polignac number, because 20365004723 - 2¹² = 20365000627 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20365004723.

It is not an unprimeable number, because it can be changed into a prime (20365004743) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1534211 + ... + 1547427.

It is an arithmetic number, because the mean of its divisors is an integer number (1488875520).

Almost surely, 2^20365004723 is an apocalyptic number.

20365004723 is a deficient number, since it is larger than the sum of its proper divisors (3457003597).

20365004723 is a wasteful number, since it uses less digits than its factorization.

20365004723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18386.

The product of its (nonzero) digits is 30240, while the sum is 32.

The spelling of 20365004723 in words is "twenty billion, three hundred sixty-five million, four thousand, seven hundred twenty-three".