79887888878897 has 16 divisors (see below), whose sum is σ = 87952755105600. Its totient is φ = 71956786674240.

The previous prime is 79887888878867. The next prime is 79887888878939.

79887888878897 is nontrivially palindromic in base 10.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-79887888878897 is a prime.

It is not an unprimeable number, because it can be changed into a prime (79887888878867) 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, 37399583 + ... + 39477899.

It is an arithmetic number, because the mean of its divisors is an integer number (5497047194100).

Almost surely, 2^{79887888878897} is an apocalyptic number.

It is an amenable number.

79887888878897 is a deficient number, since it is larger than the sum of its proper divisors (8064866226703).

79887888878897 is a wasteful number, since it uses less digits than its factorization.

79887888878897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2110496.

The product of its digits is 3262849744896, while the sum is 110.

The spelling of 79887888878897 in words is "seventy-nine trillion, eight hundred eighty-seven billion, eight hundred eighty-eight million, eight hundred seventy-eight thousand, eight hundred ninety-seven".