78535253587 has 16 divisors (see below), whose sum is σ = 94220236800. Its totient is φ = 64040296320.

The previous prime is 78535253579. The next prime is 78535253603.

78535253587 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 78535253587 - 2³ = 78535253579 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78535250587) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3054262 + ... + 3079867.

It is an arithmetic number, because the mean of its divisors is an integer number (5888764800).

Almost surely, 2^78535253587 is an apocalyptic number.

78535253587 is a deficient number, since it is larger than the sum of its proper divisors (15684983213).

78535253587 is a wasteful number, since it uses less digits than its factorization.

78535253587 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6134226.

The product of its digits is 35280000, while the sum is 58.

The spelling of 78535253587 in words is "seventy-eight billion, five hundred thirty-five million, two hundred fifty-three thousand, five hundred eighty-seven".