78186714047 has 16 divisors (see below), whose sum is σ = 88694964960. Its totient is φ = 68325783552.

The previous prime is 78186714031. The next prime is 78186714059. The reversal of 78186714047 is 74041768187.

It is not a de Polignac number, because 78186714047 - 2⁴ = 78186714031 is a prime.

It is a super-2 number, since 2×78186714047² (a number of 23 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (53) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 78186714047.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78186714847) 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 15 ways as a sum of consecutive naturals, for example, 243503 + ... + 464399.

It is an arithmetic number, because the mean of its divisors is an integer number (5543435310).

Almost surely, 2^78186714047 is an apocalyptic number.

78186714047 is a deficient number, since it is larger than the sum of its proper divisors (10508250913).

78186714047 is a wasteful number, since it uses less digits than its factorization.

78186714047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222362.

The product of its (nonzero) digits is 2107392, while the sum is 53.

The spelling of 78186714047 in words is "seventy-eight billion, one hundred eighty-six million, seven hundred fourteen thousand, forty-seven".