20620444023 has 40 divisors (see below), whose sum is σ = 30949691696. Its totient is φ = 13681872000.

The previous prime is 20620444001. The next prime is 20620444067. The reversal of 20620444023 is 32044402602.

It is not a de Polignac number, because 20620444023 - 2⁶ = 20620443959 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20620444093) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 29841108 + ... + 29841798.

Almost surely, 2^20620444023 is an apocalyptic number.

20620444023 is a deficient number, since it is larger than the sum of its proper divisors (10329247673).

20620444023 is an equidigital number, since it uses as much as digits as its factorization.

20620444023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1917 (or 1908 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 27.

Adding to 20620444023 its reverse (32044402602), we get a palindrome (52664846625).

The spelling of 20620444023 in words is "twenty billion, six hundred twenty million, four hundred forty-four thousand, twenty-three".