78329292387 has 4 divisors (see below), whose sum is σ = 104439056520. Its totient is φ = 52219528256.

The previous prime is 78329292359. The next prime is 78329292443.

78329292387 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 78329292387 - 2⁶ = 78329292323 is a prime.

It is a super-2 number, since 2×78329292387² (a number of 23 digits) contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a self number, because there is not a number n which added to its sum of digits gives 78329292387.

It is not an unprimeable number, because it can be changed into a prime (78329292347) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 13054882062 + ... + 13054882067.

It is an arithmetic number, because the mean of its divisors is an integer number (26109764130).

Almost surely, 2^78329292387 is an apocalyptic number.

78329292387 is a deficient number, since it is larger than the sum of its proper divisors (26109764133).

78329292387 is a wasteful number, since it uses less digits than its factorization.

78329292387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26109764132.

The product of its digits is 18289152, while the sum is 60.

The spelling of 78329292387 in words is "seventy-eight billion, three hundred twenty-nine million, two hundred ninety-two thousand, three hundred eighty-seven".