15799766971743 has 10 divisors (see below), whose sum is σ = 23602121031984. Its totient is φ = 10533177981108.

The previous prime is 15799766971733. The next prime is 15799766971757. The reversal of 15799766971743 is 34717966799751.

It is a happy number.

It is not a de Polignac number, because 15799766971743 - 2¹⁶ = 15799766906207 is a prime.

It is a super-2 number, since 2×15799766971743² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (81), and also a Moran number because the ratio is a prime number: 195058851503 = 15799766971743 / (1 + 5 + 7 + 9 + 9 + 7 + 6 + 6 + 9 + 7 + 1 + 7 + 4 + 3).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15799766971733) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 97529425671 + ... + 97529425832.

Almost surely, 2^{15799766971743} is an apocalyptic number.

15799766971743 is a deficient number, since it is larger than the sum of its proper divisors (7802354060241).

15799766971743 is an equidigital number, since it uses as much as digits as its factorization.

15799766971743 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 195058851515 (or 195058851506 counting only the distinct ones).

The product of its digits is 3780710640, while the sum is 81.

The spelling of 15799766971743 in words is "fifteen trillion, seven hundred ninety-nine billion, seven hundred sixty-six million, nine hundred seventy-one thousand, seven hundred forty-three".