78896869886 has 8 divisors (see below), whose sum is σ = 118347906504. Its totient is φ = 39447567720.

The previous prime is 78896869873. The next prime is 78896869907. The reversal of 78896869886 is 68896869887.

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

It is a super-3 number, since 3×78896869886³ (a number of 34 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 313205 + ... + 505856.

It is an arithmetic number, because the mean of its divisors is an integer number (14793488313).

Almost surely, 2^78896869886 is an apocalyptic number.

78896869886 is a deficient number, since it is larger than the sum of its proper divisors (39451036618).

78896869886 is a wasteful number, since it uses less digits than its factorization.

78896869886 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 867226.

The product of its digits is 4013162496, while the sum is 83.

Subtracting from 78896869886 its reverse (68896869887), we obtain a palindrome (9999999999).

The spelling of 78896869886 in words is "seventy-eight billion, eight hundred ninety-six million, eight hundred sixty-nine thousand, eight hundred eighty-six".