20390567023923 has 8 divisors (see below), whose sum is σ = 27307191081408. Its totient is φ = 13533827157864.

The previous prime is 20390567023921. The next prime is 20390567023933. The reversal of 20390567023923 is 32932076509302.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20390567023923 - 2¹ = 20390567023921 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20390567023921) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14971047061 + ... + 14971048422.

It is an arithmetic number, because the mean of its divisors is an integer number (3413398885176).

Almost surely, 2^{20390567023923} is an apocalyptic number.

20390567023923 is a deficient number, since it is larger than the sum of its proper divisors (6916624057485).

20390567023923 is a wasteful number, since it uses less digits than its factorization.

20390567023923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29942095713.

The product of its (nonzero) digits is 3674160, while the sum is 51.

The spelling of 20390567023923 in words is "twenty trillion, three hundred ninety billion, five hundred sixty-seven million, twenty-three thousand, nine hundred twenty-three".