78187042318 has 16 divisors (see below), whose sum is σ = 146219923584. Its totient is φ = 30462483960.

The previous prime is 78187042267. The next prime is 78187042331. The reversal of 78187042318 is 81324078187.

It is a super-2 number, since 2×78187042318² (a number of 23 digits) contains 22 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 (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 253853880 + ... + 253854187.

It is an arithmetic number, because the mean of its divisors is an integer number (9138745224).

Almost surely, 2^78187042318 is an apocalyptic number.

78187042318 is a deficient number, since it is larger than the sum of its proper divisors (68032881266).

78187042318 is a wasteful number, since it uses less digits than its factorization.

78187042318 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 507708087.

The product of its (nonzero) digits is 602112, while the sum is 49.

The spelling of 78187042318 in words is "seventy-eight billion, one hundred eighty-seven million, forty-two thousand, three hundred eighteen".