78632966279 has 4 divisors (see below), whose sum is σ = 89866247184. Its totient is φ = 67399685376.

The previous prime is 78632966273. The next prime is 78632966297. The reversal of 78632966279 is 97266923687.

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

It is a cyclic number.

It is not a de Polignac number, because 78632966279 - 2⁴ = 78632966263 is a prime.

It is a super-2 number, since 2×78632966279² (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 (78632966273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5616640442 + ... + 5616640455.

It is an arithmetic number, because the mean of its divisors is an integer number (22466561796).

Almost surely, 2^78632966279 is an apocalyptic number.

78632966279 is a deficient number, since it is larger than the sum of its proper divisors (11233280905).

78632966279 is a wasteful number, since it uses less digits than its factorization.

78632966279 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11233280904.

The product of its digits is 82301184, while the sum is 65.

The spelling of 78632966279 in words is "seventy-eight billion, six hundred thirty-two million, nine hundred sixty-six thousand, two hundred seventy-nine".