78899968754 has 16 divisors (see below), whose sum is σ = 120492347040. Its totient is φ = 38737369440.

The previous prime is 78899968753. The next prime is 78899968787. The reversal of 78899968754 is 45786999887.

It is not an unprimeable number, because it can be changed into a prime (78899968753) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 274427 + ... + 482814.

It is an arithmetic number, because the mean of its divisors is an integer number (7530771690).

Almost surely, 2^78899968754 is an apocalyptic number.

78899968754 is a deficient number, since it is larger than the sum of its proper divisors (41592378286).

78899968754 is a wasteful number, since it uses less digits than its factorization.

78899968754 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 758185.

The product of its digits is 2194698240, while the sum is 80.

The spelling of 78899968754 in words is "seventy-eight billion, eight hundred ninety-nine million, nine hundred sixty-eight thousand, seven hundred fifty-four".