20799698459 has 2 divisors, whose sum is σ = 20799698460. Its totient is φ = 20799698458.

The previous prime is 20799698393. The next prime is 20799698467. The reversal of 20799698459 is 95489699702.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20799698459 is a prime.

It is not a weakly prime, because it can be changed into another prime (20799698489) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10399849229 + 10399849230.

It is an arithmetic number, because the mean of its divisors is an integer number (10399849230).

Almost surely, 2^20799698459 is an apocalyptic number.

20799698459 is a deficient number, since it is larger than the sum of its proper divisors (1).

20799698459 is an equidigital number, since it uses as much as digits as its factorization.

20799698459 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 88179840, while the sum is 68.

The spelling of 20799698459 in words is "twenty billion, seven hundred ninety-nine million, six hundred ninety-eight thousand, four hundred fifty-nine".