78663860159 has 8 divisors (see below), whose sum is σ = 82086977760. Its totient is φ = 75240988416.

The previous prime is 78663860153. The next prime is 78663860179. The reversal of 78663860159 is 95106836687.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-78663860159 is a prime.

It is a super-2 number, since 2×78663860159² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 78663860098 and 78663860107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78663860153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 939107 + ... + 1019435.

It is an arithmetic number, because the mean of its divisors is an integer number (10260872220).

Almost surely, 2^78663860159 is an apocalyptic number.

78663860159 is a deficient number, since it is larger than the sum of its proper divisors (3423117601).

78663860159 is a wasteful number, since it uses less digits than its factorization.

78663860159 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122929.

The product of its (nonzero) digits is 13063680, while the sum is 59.

The spelling of 78663860159 in words is "seventy-eight billion, six hundred sixty-three million, eight hundred sixty thousand, one hundred fifty-nine".