20696966179 has 2 divisors, whose sum is σ = 20696966180. Its totient is φ = 20696966178.

The previous prime is 20696966161. The next prime is 20696966197. The reversal of 20696966179 is 97166969602.

Together with next prime (20696966197) it forms an Ormiston pair, because they use the same digits, order apart.

It is a balanced prime because it is at equal distance from previous prime (20696966161) and next prime (20696966197).

It is a cyclic number.

It is not a de Polignac number, because 20696966179 - 2²³ = 20688577571 is a prime.

It is not a weakly prime, because it can be changed into another prime (20696966119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10348483089 + 10348483090.

It is an arithmetic number, because the mean of its divisors is an integer number (10348483090).

Almost surely, 2^20696966179 is an apocalyptic number.

20696966179 is a deficient number, since it is larger than the sum of its proper divisors (1).

20696966179 is an equidigital number, since it uses as much as digits as its factorization.

20696966179 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13226976, while the sum is 61.

The spelling of 20696966179 in words is "twenty billion, six hundred ninety-six million, nine hundred sixty-six thousand, one hundred seventy-nine".