78800012 has 24 divisors (see below), whose sum is σ = 141355200. Its totient is φ = 38419200.

The previous prime is 78799997. The next prime is 78800017. The reversal of 78800012 is 21000887.

It is not an unprimeable number, because it can be changed into a prime (78800017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 65012 + ... + 66212.

It is an arithmetic number, because the mean of its divisors is an integer number (5889800).

Almost surely, 2^78800012 is an apocalyptic number.

It is an amenable number.

78800012 is a deficient number, since it is larger than the sum of its proper divisors (62555188).

78800012 is a wasteful number, since it uses less digits than its factorization.

78800012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1601 (or 1599 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 26.

The square root of 78800012 is about 8876.9370843777. The cubic root of 78800012 is about 428.7216622296.

Adding to 78800012 its reverse (21000887), we get a palindrome (99800899).

The spelling of 78800012 in words is "seventy-eight million, eight hundred thousand, twelve".