79642142815 has 8 divisors (see below), whose sum is σ = 96179302080. Its totient is φ = 63307893792.

The previous prime is 79642142809. The next prime is 79642142857. The reversal of 79642142815 is 51824124697.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 79642142815 - 2¹³ = 79642134623 is a prime.

It is a super-2 number, since 2×79642142815² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50726695 + ... + 50728264.

It is an arithmetic number, because the mean of its divisors is an integer number (12022412760).

Almost surely, 2^79642142815 is an apocalyptic number.

79642142815 is a deficient number, since it is larger than the sum of its proper divisors (16537159265).

79642142815 is a wasteful number, since it uses less digits than its factorization.

79642142815 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101455121.

The product of its digits is 967680, while the sum is 49.

The spelling of 79642142815 in words is "seventy-nine billion, six hundred forty-two million, one hundred forty-two thousand, eight hundred fifteen".