79635853697 has 4 divisors (see below), whose sum is σ = 80530638660. Its totient is φ = 78741068736.

The previous prime is 79635853673. The next prime is 79635853723.

It is a happy number.

79635853697 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 16456014961 + 63179838736 = 128281^2 + 251356^2 .

It is a cyclic number.

It is not a de Polignac number, because 79635853697 - 2⁸ = 79635853441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (79635853667) 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, 447392348 + ... + 447392525.

It is an arithmetic number, because the mean of its divisors is an integer number (20132659665).

Almost surely, 2^79635853697 is an apocalyptic number.

It is an amenable number.

79635853697 is a deficient number, since it is larger than the sum of its proper divisors (894784963).

79635853697 is an equidigital number, since it uses as much as digits as its factorization.

79635853697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 894784962.

The product of its digits is 257191200, while the sum is 68.

The spelling of 79635853697 in words is "seventy-nine billion, six hundred thirty-five million, eight hundred fifty-three thousand, six hundred ninety-seven".