8157443679399 has 32 divisors (see below), whose sum is σ = 13090768704000. Its totient is φ = 4413985035264.

The previous prime is 8157443679397. The next prime is 8157443679431. The reversal of 8157443679399 is 9939763447518.

It is not a de Polignac number, because 8157443679399 - 2¹ = 8157443679397 is a prime.

It is a Smith number, since the sum of its digits (75) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 8157443679399.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8157443679391) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3952014 + ... + 5650955.

It is an arithmetic number, because the mean of its divisors is an integer number (409086522000).

Almost surely, 2^{8157443679399} is an apocalyptic number.

8157443679399 is a deficient number, since it is larger than the sum of its proper divisors (4933325024601).

8157443679399 is a wasteful number, since it uses less digits than its factorization.

8157443679399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9605127.

The product of its digits is 1234517760, while the sum is 75.

The spelling of 8157443679399 in words is "eight trillion, one hundred fifty-seven billion, four hundred forty-three million, six hundred seventy-nine thousand, three hundred ninety-nine".