78942567563 has 4 divisors (see below), whose sum is σ = 83097439560. Its totient is φ = 74787695568.

The previous prime is 78942567541. The next prime is 78942567569. The reversal of 78942567563 is 36576524987.

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 78942567563 - 2⁶ = 78942567499 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 78942567496 and 78942567505.

It is not an unprimeable number, because it can be changed into a prime (78942567569) 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, 2077435970 + ... + 2077436007.

It is an arithmetic number, because the mean of its divisors is an integer number (20774359890).

Almost surely, 2^78942567563 is an apocalyptic number.

78942567563 is a deficient number, since it is larger than the sum of its proper divisors (4154871997).

78942567563 is a wasteful number, since it uses less digits than its factorization.

78942567563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4154871996.

The product of its digits is 76204800, while the sum is 62.

The spelling of 78942567563 in words is "seventy-eight billion, nine hundred forty-two million, five hundred sixty-seven thousand, five hundred sixty-three".