78236263286 has 8 divisors (see below), whose sum is σ = 117356443704. Its totient is φ = 39117448720.

The previous prime is 78236263277. The next prime is 78236263289. The reversal of 78236263286 is 68236263287.

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

It is a super-2 number, since 2×78236263286² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78236263289) 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, 183680 + ... + 436131.

It is an arithmetic number, because the mean of its divisors is an integer number (14669555463).

Almost surely, 2^78236263286 is an apocalyptic number.

78236263286 is a deficient number, since it is larger than the sum of its proper divisors (39120180418).

78236263286 is a wasteful number, since it uses less digits than its factorization.

78236263286 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 682926.

The product of its digits is 6967296, while the sum is 53.

Subtracting from 78236263286 its reverse (68236263287), we obtain a palindrome (9999999999).

The spelling of 78236263286 in words is "seventy-eight billion, two hundred thirty-six million, two hundred sixty-three thousand, two hundred eighty-six".