78818455148718 has 16 divisors (see below), whose sum is σ = 157637121828480. Its totient is φ = 26272783127736.

The previous prime is 78818455148707. The next prime is 78818455148791. The reversal of 78818455148718 is 81784155481887.

It is a self number, because there is not a number n which added to its sum of digits gives 78818455148718.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3745698 + ... + 13102181.

It is an arithmetic number, because the mean of its divisors is an integer number (9852320114280).

Almost surely, 2^{78818455148718} is an apocalyptic number.

78818455148718 is an abundant number, since it is smaller than the sum of its proper divisors (78818666679762).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

78818455148718 is a wasteful number, since it uses less digits than its factorization.

78818455148718 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17627591.

The product of its digits is 642252800, while the sum is 75.

The spelling of 78818455148718 in words is "seventy-eight trillion, eight hundred eighteen billion, four hundred fifty-five million, one hundred forty-eight thousand, seven hundred eighteen".