85741738765 has 4 divisors (see below), whose sum is σ = 102890086524. Its totient is φ = 68593391008.

The previous prime is 85741738763. The next prime is 85741738787. The reversal of 85741738765 is 56783714758.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 16401156489 + 69340582276 = 128067^2 + 263326^2 .

It is a cyclic number.

It is not a de Polignac number, because 85741738765 - 2¹ = 85741738763 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85741738763) 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, 8574173872 + ... + 8574173881.

It is an arithmetic number, because the mean of its divisors is an integer number (25722521631).

Almost surely, 2^85741738765 is an apocalyptic number.

It is an amenable number.

85741738765 is a deficient number, since it is larger than the sum of its proper divisors (17148347759).

85741738765 is a wasteful number, since it uses less digits than its factorization.

85741738765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17148347758.

The product of its digits is 39513600, while the sum is 61.

The spelling of 85741738765 in words is "eighty-five billion, seven hundred forty-one million, seven hundred thirty-eight thousand, seven hundred sixty-five".