85874765712539 has 4 divisors (see below), whose sum is σ = 86662607599920. Its totient is φ = 85086923825160.

The previous prime is 85874765712499. The next prime is 85874765712587. The reversal of 85874765712539 is 93521756747858.

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 85874765712539 - 2²⁴ = 85874748935323 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 85874765712539.

It is not an unprimeable number, because it can be changed into a prime (85874765712599) 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, 393920943527 + ... + 393920943744.

It is an arithmetic number, because the mean of its divisors is an integer number (21665651899980).

Almost surely, 2^{85874765712539} is an apocalyptic number.

85874765712539 is a deficient number, since it is larger than the sum of its proper divisors (787841887381).

85874765712539 is a wasteful number, since it uses less digits than its factorization.

85874765712539 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 787841887380.

The product of its digits is 3556224000, while the sum is 77.

The spelling of 85874765712539 in words is "eighty-five trillion, eight hundred seventy-four billion, seven hundred sixty-five million, seven hundred twelve thousand, five hundred thirty-nine".