78817960853 has 8 divisors (see below), whose sum is σ = 79824489600. Its totient is φ = 77811653088.

The previous prime is 78817960831. The next prime is 78817960873. The reversal of 78817960853 is 35806971887.

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

It is a cyclic number.

It is not a de Polignac number, because 78817960853 - 2¹⁸ = 78817698709 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78817960873) 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 7 ways as a sum of consecutive naturals, for example, 734150 + ... + 834632.

It is an arithmetic number, because the mean of its divisors is an integer number (9978061200).

Almost surely, 2^78817960853 is an apocalyptic number.

It is an amenable number.

78817960853 is a deficient number, since it is larger than the sum of its proper divisors (1006528747).

78817960853 is a wasteful number, since it uses less digits than its factorization.

78817960853 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110491.

The product of its (nonzero) digits is 20321280, while the sum is 62.

The spelling of 78817960853 in words is "seventy-eight billion, eight hundred seventeen million, nine hundred sixty thousand, eight hundred fifty-three".