78287085247 has 8 divisors (see below), whose sum is σ = 89493827616. Its totient is φ = 67086061152.

The previous prime is 78287085211. The next prime is 78287085293. The reversal of 78287085247 is 74258078287.

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 78287085247 - 2¹⁵ = 78287052479 is a prime.

It is a super-2 number, since 2×78287085247² (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 = 78287085191 and 78287085200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78287085847) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1400188 + ... + 1455025.

It is an arithmetic number, because the mean of its divisors is an integer number (11186728452).

Almost surely, 2^78287085247 is an apocalyptic number.

78287085247 is a deficient number, since it is larger than the sum of its proper divisors (11206742369).

78287085247 is a wasteful number, since it uses less digits than its factorization.

78287085247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2859137.

The product of its (nonzero) digits is 14049280, while the sum is 58.

The spelling of 78287085247 in words is "seventy-eight billion, two hundred eighty-seven million, eighty-five thousand, two hundred forty-seven".