78468139683 has 12 divisors (see below), whose sum is σ = 113351769960. Its totient is φ = 52307984736.

The previous prime is 78468139649. The next prime is 78468139693. The reversal of 78468139683 is 38693186487.

78468139683 is a `hidden beast` number, since 7 + 8 + 468 + 1 + 3 + 96 + 83 = 666.

It is not a de Polignac number, because 78468139683 - 2⁶ = 78468139619 is a prime.

It is a Smith number, since the sum of its digits (63) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 78468139683.

It is not an unprimeable number, because it can be changed into a prime (78468139613) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 219066 + ... + 452687.

It is an arithmetic number, because the mean of its divisors is an integer number (9445980830).

Almost surely, 2^78468139683 is an apocalyptic number.

78468139683 is a deficient number, since it is larger than the sum of its proper divisors (34883630277).

78468139683 is a wasteful number, since it uses less digits than its factorization.

78468139683 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 684738 (or 684735 counting only the distinct ones).

The product of its digits is 41803776, while the sum is 63.

The spelling of 78468139683 in words is "seventy-eight billion, four hundred sixty-eight million, one hundred thirty-nine thousand, six hundred eighty-three".