20755047179 has 2 divisors, whose sum is σ = 20755047180. Its totient is φ = 20755047178.

The previous prime is 20755047167. The next prime is 20755047259. The reversal of 20755047179 is 97174055702.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20755047179 is a prime.

It is not a weakly prime, because it can be changed into another prime (20755041179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10377523589 + 10377523590.

It is an arithmetic number, because the mean of its divisors is an integer number (10377523590).

Almost surely, 2^20755047179 is an apocalyptic number.

20755047179 is a deficient number, since it is larger than the sum of its proper divisors (1).

20755047179 is an equidigital number, since it uses as much as digits as its factorization.

20755047179 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 617400, while the sum is 47.

The spelling of 20755047179 in words is "twenty billion, seven hundred fifty-five million, forty-seven thousand, one hundred seventy-nine".