20001323179 has 2 divisors, whose sum is σ = 20001323180. Its totient is φ = 20001323178.

The previous prime is 20001323159. The next prime is 20001323231. The reversal of 20001323179 is 97132310002.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20001323179 is a prime.

It is not a weakly prime, because it can be changed into another prime (20001323119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10000661589 + 10000661590.

It is an arithmetic number, because the mean of its divisors is an integer number (10000661590).

Almost surely, 2^20001323179 is an apocalyptic number.

20001323179 is a deficient number, since it is larger than the sum of its proper divisors (1).

20001323179 is an equidigital number, since it uses as much as digits as its factorization.

20001323179 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2268, while the sum is 28.

The spelling of 20001323179 in words is "twenty billion, one million, three hundred twenty-three thousand, one hundred seventy-nine".