78040080447 has 12 divisors (see below), whose sum is σ = 121041757656. Its totient is φ = 44594331600.

The previous prime is 78040080427. The next prime is 78040080487. The reversal of 78040080447 is 74408004087.

It is not a de Polignac number, because 78040080447 - 2¹⁶ = 78040014911 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 78040080399 and 78040080408.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78040080427) 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 11 ways as a sum of consecutive naturals, for example, 265442304 + ... + 265442597.

It is an arithmetic number, because the mean of its divisors is an integer number (10086813138).

Almost surely, 2^78040080447 is an apocalyptic number.

78040080447 is a deficient number, since it is larger than the sum of its proper divisors (43001677209).

78040080447 is a wasteful number, since it uses less digits than its factorization.

78040080447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 530884918 (or 530884911 counting only the distinct ones).

The product of its (nonzero) digits is 200704, while the sum is 42.

The spelling of 78040080447 in words is "seventy-eight billion, forty million, eighty thousand, four hundred forty-seven".