78888599588887 has 16 divisors (see below), whose sum is σ = 86452445203488. Its totient is φ = 71390275476480.

The previous prime is 78888599588849. The next prime is 78888599588893.

78888599588887 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-78888599588887 is a prime.

It is a super-2 number, since 2×78888599588887² (a number of 29 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 78888599588887.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78888599588387) 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, 5664013 + ... + 13778905.

It is an arithmetic number, because the mean of its divisors is an integer number (5403277825218).

Almost surely, 2^{78888599588887} is an apocalyptic number.

78888599588887 is a deficient number, since it is larger than the sum of its proper divisors (7563845614601).

78888599588887 is a wasteful number, since it uses less digits than its factorization.

78888599588887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8118930.

The product of its digits is 1664719257600, while the sum is 106.

The spelling of 78888599588887 in words is "seventy-eight trillion, eight hundred eighty-eight billion, five hundred ninety-nine million, five hundred eighty-eight thousand, eight hundred eighty-seven".