15797286176399 has 64 divisors (see below), whose sum is σ = 20036138234112. Its totient is φ = 12121237094400.

The previous prime is 15797286176369. The next prime is 15797286176411. The reversal of 15797286176399 is 99367168279751.

It is a happy number.

It is a Cunningham number, because it is equal to 3974580²-1.

It is a de Polignac number, because none of the positive numbers 2^k-15797286176399 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15797286176359) 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 in 63 ways as a sum of consecutive naturals, for example, 2118446879 + ... + 2118454335.

It is an arithmetic number, because the mean of its divisors is an integer number (313064659908).

Almost surely, 2^{15797286176399} is an apocalyptic number.

15797286176399 is a deficient number, since it is larger than the sum of its proper divisors (4238852057713).

15797286176399 is a wasteful number, since it uses less digits than its factorization.

15797286176399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10836.

The product of its digits is 2160406080, while the sum is 80.

The spelling of 15797286176399 in words is "fifteen trillion, seven hundred ninety-seven billion, two hundred eighty-six million, one hundred seventy-six thousand, three hundred ninety-nine".