79835813569 has 16 divisors (see below), whose sum is σ = 82948788160. Its totient is φ = 76797927360.

The previous prime is 79835813539. The next prime is 79835813591. The reversal of 79835813569 is 96531853897.

It is a cyclic number.

It is not a de Polignac number, because 79835813569 - 2¹¹ = 79835811521 is a prime.

It is a super-2 number, since 2×79835813569² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 79835813569.

It is not an unprimeable number, because it can be changed into a prime (79835813539) 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, 497827 + ... + 638359.

It is an arithmetic number, because the mean of its divisors is an integer number (5184299260).

Almost surely, 2^79835813569 is an apocalyptic number.

It is an amenable number.

79835813569 is a deficient number, since it is larger than the sum of its proper divisors (3112974591).

79835813569 is a wasteful number, since it uses less digits than its factorization.

79835813569 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140800.

The product of its digits is 48988800, while the sum is 64.

The spelling of 79835813569 in words is "seventy-nine billion, eight hundred thirty-five million, eight hundred thirteen thousand, five hundred sixty-nine".