15785792857223 has 2 divisors, whose sum is σ = 15785792857224. Its totient is φ = 15785792857222.

The previous prime is 15785792857213. The next prime is 15785792857273. The reversal of 15785792857223 is 32275829758751.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-15785792857223 is a prime.

It is a super-2 number, since 2×15785792857223² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15785792857213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7892896428611 + 7892896428612.

It is an arithmetic number, because the mean of its divisors is an integer number (7892896428612).

Almost surely, 2^{15785792857223} is an apocalyptic number.

15785792857223 is a deficient number, since it is larger than the sum of its proper divisors (1).

15785792857223 is an equidigital number, since it uses as much as digits as its factorization.

15785792857223 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 592704000, while the sum is 71.

The spelling of 15785792857223 in words is "fifteen trillion, seven hundred eighty-five billion, seven hundred ninety-two million, eight hundred fifty-seven thousand, two hundred twenty-three".