83078647757827 has 4 divisors (see below), whose sum is σ = 84318627575176. Its totient is φ = 81838667940480.

The previous prime is 83078647757821. The next prime is 83078647757837. The reversal of 83078647757827 is 72875774687038.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-83078647757827 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (83078647757821) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 619989908574 + ... + 619989908707.

It is an arithmetic number, because the mean of its divisors is an integer number (21079656893794).

Almost surely, 2^{83078647757827} is an apocalyptic number.

83078647757827 is a deficient number, since it is larger than the sum of its proper divisors (1239979817349).

83078647757827 is a wasteful number, since it uses less digits than its factorization.

83078647757827 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1239979817348.

The product of its (nonzero) digits is 6195732480, while the sum is 79.

The spelling of 83078647757827 in words is "eighty-three trillion, seventy-eight billion, six hundred forty-seven million, seven hundred fifty-seven thousand, eight hundred twenty-seven".