78248566584287 has 32 divisors (see below), whose sum is σ = 88153415175168. Its totient is φ = 68839346880000.

The previous prime is 78248566584271. The next prime is 78248566584343.

78248566584287 is nontrivially palindromic in base 10.

It is a cyclic number.

It is not a de Polignac number, because 78248566584287 - 2⁴ = 78248566584271 is a prime.

It is a super-2 number, since 2×78248566584287² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78248566554287) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 26333987 + ... + 29154347.

It is an arithmetic number, because the mean of its divisors is an integer number (2754794224224).

Almost surely, 2^{78248566584287} is an apocalyptic number.

78248566584287 is a deficient number, since it is larger than the sum of its proper divisors (9904848590881).

78248566584287 is a wasteful number, since it uses less digits than its factorization.

78248566584287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2820911.

The product of its digits is 11560550400, while the sum is 80.

The spelling of 78248566584287 in words is "seventy-eight trillion, two hundred forty-eight billion, five hundred sixty-six million, five hundred eighty-four thousand, two hundred eighty-seven".