79899099897 has 8 divisors (see below), whose sum is σ = 107586907200. Its totient is φ = 52738679600.

The previous prime is 79899099859. The next prime is 79899099913.

79899099897 is nontrivially palindromic in base 10.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 79899099897 - 2³¹ = 77751616249 is a prime.

It is not an unprimeable number, because it can be changed into a prime (79899029897) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 131846397 + ... + 131847002.

It is an arithmetic number, because the mean of its divisors is an integer number (13448363400).

Almost surely, 2^79899099897 is an apocalyptic number.

It is an amenable number.

79899099897 is a deficient number, since it is larger than the sum of its proper divisors (27687807303).

79899099897 is a wasteful number, since it uses less digits than its factorization.

79899099897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 263693503.

The product of its (nonzero) digits is 1666598976, while the sum is 84.

The spelling of 79899099897 in words is "seventy-nine billion, eight hundred ninety-nine million, ninety-nine thousand, eight hundred ninety-seven".