78552784523 has 4 divisors (see below), whose sum is σ = 78598113888. Its totient is φ = 78507455160.

The previous prime is 78552784481. The next prime is 78552784559. The reversal of 78552784523 is 32548725587.

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 78552784523 - 2²⁸ = 78284349067 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78552754523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22662083 + ... + 22665548.

It is an arithmetic number, because the mean of its divisors is an integer number (19649528472).

Almost surely, 2^78552784523 is an apocalyptic number.

78552784523 is a deficient number, since it is larger than the sum of its proper divisors (45329365).

78552784523 is a wasteful number, since it uses less digits than its factorization.

78552784523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45329364.

The product of its digits is 18816000, while the sum is 56.

The spelling of 78552784523 in words is "seventy-eight billion, five hundred fifty-two million, seven hundred eighty-four thousand, five hundred twenty-three".