79889465679 has 8 divisors (see below), whose sum is σ = 106539372720. Its totient is φ = 53249601216.

The previous prime is 79889465671. The next prime is 79889465717. The reversal of 79889465679 is 97656498897.

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

It is not a de Polignac number, because 79889465679 - 2³ = 79889465671 is a prime.

It is a super-2 number, since 2×79889465679² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79889465671) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2492062 + ... + 2523915.

It is an arithmetic number, because the mean of its divisors is an integer number (13317421590).

Almost surely, 2^79889465679 is an apocalyptic number.

79889465679 is a deficient number, since it is larger than the sum of its proper divisors (26649907041).

79889465679 is a wasteful number, since it uses less digits than its factorization.

79889465679 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5021289.

The product of its digits is 1646023680, while the sum is 78.

The spelling of 79889465679 in words is "seventy-nine billion, eight hundred eighty-nine million, four hundred sixty-five thousand, six hundred seventy-nine".