78563488547 has 4 divisors (see below), whose sum is σ = 78566501040. Its totient is φ = 78560476056.

The previous prime is 78563488529. The next prime is 78563488561. The reversal of 78563488547 is 74588436587.

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 78563488547 - 2³² = 74268521251 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78563488147) 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, 1466783 + ... + 1519400.

It is an arithmetic number, because the mean of its divisors is an integer number (19641625260).

Almost surely, 2^78563488547 is an apocalyptic number.

78563488547 is a deficient number, since it is larger than the sum of its proper divisors (3012493).

78563488547 is a wasteful number, since it uses less digits than its factorization.

78563488547 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3012492.

The product of its digits is 180633600, while the sum is 65.

The spelling of 78563488547 in words is "seventy-eight billion, five hundred sixty-three million, four hundred eighty-eight thousand, five hundred forty-seven".