79996866869997 has 48 divisors (see below), whose sum is σ = 148876936243840. Its totient is φ = 41556813946560.

The previous prime is 79996866869987. The next prime is 79996866869999.

79996866869997 is nontrivially palindromic in base 10.

79996866869997 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 79996866869997 - 2⁷ = 79996866869869 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79996866869999) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1749001288 + ... + 1749047025.

Almost surely, 2^{79996866869997} is an apocalyptic number.

79996866869997 is a gapful number since it is divisible by the number (77) formed by its first and last digit.

It is an amenable number.

79996866869997 is a deficient number, since it is larger than the sum of its proper divisors (68880069373843).

79996866869997 is a wasteful number, since it uses less digits than its factorization.

79996866869997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3498048351 (or 3498048334 counting only the distinct ones).

The product of its digits is 2159912272896, while the sum is 108.

The spelling of 79996866869997 in words is "seventy-nine trillion, nine hundred ninety-six billion, eight hundred sixty-six million, eight hundred sixty-nine thousand, nine hundred ninety-seven".