79635571851 has 16 divisors (see below), whose sum is σ = 122647298688. Its totient is φ = 45424924800.

The previous prime is 79635571831. The next prime is 79635571859. The reversal of 79635571851 is 15817553697.

It is a happy number.

It is not a de Polignac number, because 79635571851 - 2⁷ = 79635571723 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 79635571791 and 79635571800.

It is not an unprimeable number, because it can be changed into a prime (79635571859) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 70975885 + ... + 70977006.

It is an arithmetic number, because the mean of its divisors is an integer number (7665456168).

Almost surely, 2^79635571851 is an apocalyptic number.

79635571851 is a deficient number, since it is larger than the sum of its proper divisors (43011726837).

79635571851 is a wasteful number, since it uses less digits than its factorization.

79635571851 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141952922.

The product of its digits is 7938000, while the sum is 57.

The spelling of 79635571851 in words is "seventy-nine billion, six hundred thirty-five million, five hundred seventy-one thousand, eight hundred fifty-one".