20555321124179 has 2 divisors, whose sum is σ = 20555321124180. Its totient is φ = 20555321124178.

The previous prime is 20555321124161. The next prime is 20555321124181. The reversal of 20555321124179 is 97142112355502.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20555321124179 - 2²⁰ = 20555320075603 is a prime.

Together with 20555321124181, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (20555321124109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10277660562089 + 10277660562090.

It is an arithmetic number, because the mean of its divisors is an integer number (10277660562090).

Almost surely, 2^{20555321124179} is an apocalyptic number.

20555321124179 is a deficient number, since it is larger than the sum of its proper divisors (1).

20555321124179 is an equidigital number, since it uses as much as digits as its factorization.

20555321124179 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 756000, while the sum is 47.

The spelling of 20555321124179 in words is "twenty trillion, five hundred fifty-five billion, three hundred twenty-one million, one hundred twenty-four thousand, one hundred seventy-nine".