8142696679569 has 4 divisors (see below), whose sum is σ = 10856928906096. Its totient is φ = 5428464453044.

The previous prime is 8142696679543. The next prime is 8142696679573. The reversal of 8142696679569 is 9659766962418.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 8142696679569 - 2⁷ = 8142696679441 is a prime.

It is a super-2 number, since 2×8142696679569² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 8142696679494 and 8142696679503.

It is not an unprimeable number, because it can be changed into a prime (8142696679069) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1357116113259 + ... + 1357116113264.

It is an arithmetic number, because the mean of its divisors is an integer number (2714232226524).

Almost surely, 2^{8142696679569} is an apocalyptic number.

It is an amenable number.

8142696679569 is a deficient number, since it is larger than the sum of its proper divisors (2714232226527).

8142696679569 is a wasteful number, since it uses less digits than its factorization.

8142696679569 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2714232226526.

The product of its digits is 2116316160, while the sum is 78.

The spelling of 8142696679569 in words is "eight trillion, one hundred forty-two billion, six hundred ninety-six million, six hundred seventy-nine thousand, five hundred sixty-nine".