78316787319 has 16 divisors (see below), whose sum is σ = 105947922912. Its totient is φ = 51449707008.

The previous prime is 78316787303. The next prime is 78316787321. The reversal of 78316787319 is 91378761387.

It is not a de Polignac number, because 78316787319 - 2⁴ = 78316787303 is a prime.

It is a super-2 number, since 2×78316787319² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78316787119) 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, 84547 + ... + 404699.

It is an arithmetic number, because the mean of its divisors is an integer number (6621745182).

Almost surely, 2^78316787319 is an apocalyptic number.

78316787319 is a deficient number, since it is larger than the sum of its proper divisors (27631135593).

78316787319 is a wasteful number, since it uses less digits than its factorization.

78316787319 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 321346.

The product of its digits is 10668672, while the sum is 60.

The spelling of 78316787319 in words is "seventy-eight billion, three hundred sixteen million, seven hundred eighty-seven thousand, three hundred nineteen".