20173013879 has 2 divisors, whose sum is σ = 20173013880. Its totient is φ = 20173013878.

The previous prime is 20173013837. The next prime is 20173013891. The reversal of 20173013879 is 97831037102.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20173013879 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20173013899) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10086506939 + 10086506940.

It is an arithmetic number, because the mean of its divisors is an integer number (10086506940).

Almost surely, 2^20173013879 is an apocalyptic number.

20173013879 is a deficient number, since it is larger than the sum of its proper divisors (1).

20173013879 is an equidigital number, since it uses as much as digits as its factorization.

20173013879 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 63504, while the sum is 41.

The spelling of 20173013879 in words is "twenty billion, one hundred seventy-three million, thirteen thousand, eight hundred seventy-nine".