19669405092479 has 2 divisors, whose sum is σ = 19669405092480. Its totient is φ = 19669405092478.

The previous prime is 19669405092409. The next prime is 19669405092527. The reversal of 19669405092479 is 97429050496691.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-19669405092479 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19669405092409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9834702546239 + 9834702546240.

It is an arithmetic number, because the mean of its divisors is an integer number (9834702546240).

Almost surely, 2^{19669405092479} is an apocalyptic number.

19669405092479 is a deficient number, since it is larger than the sum of its proper divisors (1).

19669405092479 is an equidigital number, since it uses as much as digits as its factorization.

19669405092479 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 264539520, while the sum is 71.

The spelling of 19669405092479 in words is "nineteen trillion, six hundred sixty-nine billion, four hundred five million, ninety-two thousand, four hundred seventy-nine".