78427863543 has 8 divisors (see below), whose sum is σ = 104573523456. Its totient is φ = 52283723000.

The previous prime is 78427863499. The next prime is 78427863551. The reversal of 78427863543 is 34536872487.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 78427863543 - 2¹⁴ = 78427847159 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78427863343) 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 7 ways as a sum of consecutive naturals, for example, 253383 + ... + 470168.

It is an arithmetic number, because the mean of its divisors is an integer number (13071690432).

Almost surely, 2^78427863543 is an apocalyptic number.

78427863543 is a deficient number, since it is larger than the sum of its proper divisors (26145659913).

78427863543 is a wasteful number, since it uses less digits than its factorization.

78427863543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 759685.

The product of its digits is 27095040, while the sum is 57.

The spelling of 78427863543 in words is "seventy-eight billion, four hundred twenty-seven million, eight hundred sixty-three thousand, five hundred forty-three".