78973996463 has 4 divisors (see below), whose sum is σ = 81521544768. Its totient is φ = 76426448160.

The previous prime is 78973996447. The next prime is 78973996471. The reversal of 78973996463 is 36469937987.

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 78973996463 - 2⁴ = 78973996447 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78973996403) 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, 1273774106 + ... + 1273774167.

It is an arithmetic number, because the mean of its divisors is an integer number (20380386192).

Almost surely, 2^78973996463 is an apocalyptic number.

78973996463 is a deficient number, since it is larger than the sum of its proper divisors (2547548305).

78973996463 is a wasteful number, since it uses less digits than its factorization.

78973996463 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2547548304.

The product of its digits is 370355328, while the sum is 71.

The spelling of 78973996463 in words is "seventy-eight billion, nine hundred seventy-three million, nine hundred ninety-six thousand, four hundred sixty-three".