78236263287 has 32 divisors (see below), whose sum is σ = 142653020160. Its totient is φ = 41267478240.

The previous prime is 78236263277. The next prime is 78236263289.

78236263287 is a `hidden beast` number, since 7 + 8 + 2 + 3 + 626 + 3 + 2 + 8 + 7 = 666.

78236263287 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 78236263287 - 2⁸ = 78236263031 is a prime.

It is a super-2 number, since 2×78236263287² (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 31 ways as a sum of consecutive naturals, for example, 15918639 + ... + 15923552.

It is an arithmetic number, because the mean of its divisors is an integer number (4457906880).

Almost surely, 2^78236263287 is an apocalyptic number.

78236263287 is a deficient number, since it is larger than the sum of its proper divisors (64416756873).

78236263287 is a wasteful number, since it uses less digits than its factorization.

78236263287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31842220 (or 31842214 counting only the distinct ones).

The product of its digits is 8128512, while the sum is 54.

The spelling of 78236263287 in words is "seventy-eight billion, two hundred thirty-six million, two hundred sixty-three thousand, two hundred eighty-seven".