78524042587 has 2 divisors, whose sum is σ = 78524042588. Its totient is φ = 78524042586.

The previous prime is 78524042579. The next prime is 78524042629.

78524042587 is nontrivially palindromic in base 10.

It is a weak prime.

It is a palprime.

It is a cyclic number.

It is not a de Polignac number, because 78524042587 - 2³ = 78524042579 is a prime.

It is not a weakly prime, because it can be changed into another prime (78524042087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39262021293 + 39262021294.

It is an arithmetic number, because the mean of its divisors is an integer number (39262021294).

Almost surely, 2^78524042587 is an apocalyptic number.

78524042587 is a deficient number, since it is larger than the sum of its proper divisors (1).

78524042587 is an equidigital number, since it uses as much as digits as its factorization.

78524042587 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5017600, while the sum is 52.

The spelling of 78524042587 in words is "seventy-eight billion, five hundred twenty-four million, forty-two thousand, five hundred eighty-seven".