20213115179 has 2 divisors, whose sum is σ = 20213115180. Its totient is φ = 20213115178.

The previous prime is 20213115151. The next prime is 20213115187. The reversal of 20213115179 is 97151131202.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20213115179 is a prime.

It is not a weakly prime, because it can be changed into another prime (20213115119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10106557589 + 10106557590.

It is an arithmetic number, because the mean of its divisors is an integer number (10106557590).

Almost surely, 2^20213115179 is an apocalyptic number.

20213115179 is a deficient number, since it is larger than the sum of its proper divisors (1).

20213115179 is an equidigital number, since it uses as much as digits as its factorization.

20213115179 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3780, while the sum is 32.

The spelling of 20213115179 in words is "twenty billion, two hundred thirteen million, one hundred fifteen thousand, one hundred seventy-nine".