20572928923 has 2 divisors, whose sum is σ = 20572928924. Its totient is φ = 20572928922.

The previous prime is 20572928921. The next prime is 20572928941. The reversal of 20572928923 is 32982927502.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20572928923 - 2¹ = 20572928921 is a prime.

Together with 20572928921, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (20572928921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10286464461 + 10286464462.

It is an arithmetic number, because the mean of its divisors is an integer number (10286464462).

Almost surely, 2^20572928923 is an apocalyptic number.

20572928923 is a deficient number, since it is larger than the sum of its proper divisors (1).

20572928923 is an equidigital number, since it uses as much as digits as its factorization.

20572928923 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1088640, while the sum is 49.

The spelling of 20572928923 in words is "twenty billion, five hundred seventy-two million, nine hundred twenty-eight thousand, nine hundred twenty-three".