19926368797 has 6 divisors (see below), whose sum is σ = 21167457818. Its totient is φ = 18754229184.

The previous prime is 19926368783. The next prime is 19926368857. The reversal of 19926368797 is 79786362991.

It can be written as a sum of positive squares in 3 ways, for example, as 2823221956 + 17103146841 = 53134^2 + 130779^2 .

It is not a de Polignac number, because 19926368797 - 2¹⁹ = 19925844509 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19926368747) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 34474398 + ... + 34474975.

Almost surely, 2^19926368797 is an apocalyptic number.

19926368797 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

19926368797 is a deficient number, since it is larger than the sum of its proper divisors (1241089021).

19926368797 is an equidigital number, since it uses as much as digits as its factorization.

19926368797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68949407 (or 68949390 counting only the distinct ones).

The product of its digits is 61725888, while the sum is 67.

The spelling of 19926368797 in words is "nineteen billion, nine hundred twenty-six million, three hundred sixty-eight thousand, seven hundred ninety-seven".