79458546961 has 4 divisors (see below), whose sum is σ = 79592541732. Its totient is φ = 79324552192.

The previous prime is 79458546919. The next prime is 79458546971. The reversal of 79458546961 is 16964585497.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 16964585497 = 2069 ⋅8199413.

It can be written as a sum of positive squares in 2 ways, for example, as 27180468225 + 52278078736 = 164865^2 + 228644^2 .

It is a cyclic number.

It is not a de Polignac number, because 79458546961 - 2⁷ = 79458546833 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 79458546893 and 79458546902.

It is not an unprimeable number, because it can be changed into a prime (79458546971) 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, 66996496 + ... + 66997681.

It is an arithmetic number, because the mean of its divisors is an integer number (19898135433).

Almost surely, 2^79458546961 is an apocalyptic number.

It is an amenable number.

79458546961 is a deficient number, since it is larger than the sum of its proper divisors (133994771).

79458546961 is a wasteful number, since it uses less digits than its factorization.

79458546961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133994770.

The product of its digits is 65318400, while the sum is 64.

The spelling of 79458546961 in words is "seventy-nine billion, four hundred fifty-eight million, five hundred forty-six thousand, nine hundred sixty-one".