20175964712923 has 2 divisors, whose sum is σ = 20175964712924. Its totient is φ = 20175964712922.

The previous prime is 20175964712851. The next prime is 20175964712929. The reversal of 20175964712923 is 32921746957102.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20175964712923 is a prime.

It is a super-2 number, since 2×20175964712923² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (20175964712929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10087982356461 + 10087982356462.

It is an arithmetic number, because the mean of its divisors is an integer number (10087982356462).

Almost surely, 2^{20175964712923} is an apocalyptic number.

20175964712923 is a deficient number, since it is larger than the sum of its proper divisors (1).

20175964712923 is an equidigital number, since it uses as much as digits as its factorization.

20175964712923 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11430720, while the sum is 58.

The spelling of 20175964712923 in words is "twenty trillion, one hundred seventy-five billion, nine hundred sixty-four million, seven hundred twelve thousand, nine hundred twenty-three".