20772620023 has 4 divisors (see below), whose sum is σ = 21065192208. Its totient is φ = 20480047840.

The previous prime is 20772620009. The next prime is 20772620051. The reversal of 20772620023 is 32002627702.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20772620023 - 2¹⁷ = 20772488951 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20772620053) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 146285986 + ... + 146286127.

It is an arithmetic number, because the mean of its divisors is an integer number (5266298052).

Almost surely, 2^20772620023 is an apocalyptic number.

20772620023 is a deficient number, since it is larger than the sum of its proper divisors (292572185).

20772620023 is an equidigital number, since it uses as much as digits as its factorization.

20772620023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 292572184.

The product of its (nonzero) digits is 14112, while the sum is 31.

The spelling of 20772620023 in words is "twenty billion, seven hundred seventy-two million, six hundred twenty thousand, twenty-three".