78102017144 has 16 divisors (see below), whose sum is σ = 146594959920. Its totient is φ = 39010027840.

The previous prime is 78102017141. The next prime is 78102017207. The reversal of 78102017144 is 44171020187.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78102017141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5114492 + ... + 5129739.

It is an arithmetic number, because the mean of its divisors is an integer number (9162184995).

Almost surely, 2^78102017144 is an apocalyptic number.

It is an amenable number.

78102017144 is a deficient number, since it is larger than the sum of its proper divisors (68492942776).

78102017144 is a wasteful number, since it uses less digits than its factorization.

78102017144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10245190 (or 10245186 counting only the distinct ones).

The product of its (nonzero) digits is 12544, while the sum is 35.

The spelling of 78102017144 in words is "seventy-eight billion, one hundred two million, seventeen thousand, one hundred forty-four".