20559896179 has 2 divisors, whose sum is σ = 20559896180. Its totient is φ = 20559896178.

The previous prime is 20559896131. The next prime is 20559896323. The reversal of 20559896179 is 97169895502.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20559896179 - 2²⁷ = 20425678451 is a prime.

It is not a weakly prime, because it can be changed into another prime (20559866179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10279948089 + 10279948090.

It is an arithmetic number, because the mean of its divisors is an integer number (10279948090).

Almost surely, 2^20559896179 is an apocalyptic number.

20559896179 is a deficient number, since it is larger than the sum of its proper divisors (1).

20559896179 is an equidigital number, since it uses as much as digits as its factorization.

20559896179 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12247200, while the sum is 61.

The spelling of 20559896179 in words is "twenty billion, five hundred fifty-nine million, eight hundred ninety-six thousand, one hundred seventy-nine".