19793336551 has 2 divisors, whose sum is σ = 19793336552. Its totient is φ = 19793336550.

The previous prime is 19793336473. The next prime is 19793336567. The reversal of 19793336551 is 15563339791.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 19793336551 - 2¹⁷ = 19793205479 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19793333551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9896668275 + 9896668276.

It is an arithmetic number, because the mean of its divisors is an integer number (9896668276).

Almost surely, 2^19793336551 is an apocalyptic number.

19793336551 is a deficient number, since it is larger than the sum of its proper divisors (1).

19793336551 is an equidigital number, since it uses as much as digits as its factorization.

19793336551 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2296350, while the sum is 52.

The spelling of 19793336551 in words is "nineteen billion, seven hundred ninety-three million, three hundred thirty-six thousand, five hundred fifty-one".