78425459047 has 4 divisors (see below), whose sum is σ = 84458186680. Its totient is φ = 72392731416.

The previous prime is 78425459029. The next prime is 78425459081. The reversal of 78425459047 is 74095452487.

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 78425459047 - 2²³ = 78417070439 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 (78425453047) 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, 3016363797 + ... + 3016363822.

It is an arithmetic number, because the mean of its divisors is an integer number (21114546670).

Almost surely, 2^78425459047 is an apocalyptic number.

78425459047 is a deficient number, since it is larger than the sum of its proper divisors (6032727633).

78425459047 is a wasteful number, since it uses less digits than its factorization.

78425459047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6032727632.

The product of its (nonzero) digits is 11289600, while the sum is 55.

The spelling of 78425459047 in words is "seventy-eight billion, four hundred twenty-five million, four hundred fifty-nine thousand, forty-seven".