78040080487 has 2 divisors, whose sum is σ = 78040080488. Its totient is φ = 78040080486.

The previous prime is 78040080427. The next prime is 78040080509. The reversal of 78040080487 is 78408004087.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 78040080487 - 2¹¹ = 78040078439 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (78040080427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39020040243 + 39020040244.

It is an arithmetic number, because the mean of its divisors is an integer number (39020040244).

Almost surely, 2^78040080487 is an apocalyptic number.

78040080487 is a deficient number, since it is larger than the sum of its proper divisors (1).

78040080487 is an equidigital number, since it uses as much as digits as its factorization.

78040080487 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 401408, while the sum is 46.

The spelling of 78040080487 in words is "seventy-eight billion, forty million, eighty thousand, four hundred eighty-seven".