19412688499 has 2 divisors, whose sum is σ = 19412688500. Its totient is φ = 19412688498.

The previous prime is 19412688469. The next prime is 19412688511. The reversal of 19412688499 is 99488621491.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 19412688499 - 2⁷ = 19412688371 is a prime.

It is not a weakly prime, because it can be changed into another prime (19412688469) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9706344249 + 9706344250.

It is an arithmetic number, because the mean of its divisors is an integer number (9706344250).

Almost surely, 2^19412688499 is an apocalyptic number.

19412688499 is a deficient number, since it is larger than the sum of its proper divisors (1).

19412688499 is an equidigital number, since it uses as much as digits as its factorization.

19412688499 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8957952, while the sum is 61.

The spelling of 19412688499 in words is "nineteen billion, four hundred twelve million, six hundred eighty-eight thousand, four hundred ninety-nine".