85392812737 has 4 divisors (see below), whose sum is σ = 85440868996. Its totient is φ = 85344756480.

The previous prime is 85392812717. The next prime is 85392812741. The reversal of 85392812737 is 73721829358.

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 41551153281 + 43841659456 = 203841^2 + 209384^2 .

It is a cyclic number.

It is not a de Polignac number, because 85392812737 - 2¹¹ = 85392810689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85392812707) 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, 24025464 + ... + 24029017.

It is an arithmetic number, because the mean of its divisors is an integer number (21360217249).

Almost surely, 2^85392812737 is an apocalyptic number.

It is an amenable number.

85392812737 is a deficient number, since it is larger than the sum of its proper divisors (48056259).

85392812737 is a wasteful number, since it uses less digits than its factorization.

85392812737 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48056258.

The product of its digits is 5080320, while the sum is 55.

The spelling of 85392812737 in words is "eighty-five billion, three hundred ninety-two million, eight hundred twelve thousand, seven hundred thirty-seven".