20413787179 has 2 divisors, whose sum is σ = 20413787180. Its totient is φ = 20413787178.

The previous prime is 20413787123. The next prime is 20413787201. The reversal of 20413787179 is 97178731402.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20413787179 is a prime.

It is not a weakly prime, because it can be changed into another prime (20413785179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10206893589 + 10206893590.

It is an arithmetic number, because the mean of its divisors is an integer number (10206893590).

Almost surely, 2^20413787179 is an apocalyptic number.

20413787179 is a deficient number, since it is larger than the sum of its proper divisors (1).

20413787179 is an equidigital number, since it uses as much as digits as its factorization.

20413787179 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 592704, while the sum is 49.

The spelling of 20413787179 in words is "twenty billion, four hundred thirteen million, seven hundred eighty-seven thousand, one hundred seventy-nine".