85973911385 has 8 divisors (see below), whose sum is σ = 109237440456. Its totient is φ = 64733297920.

The previous prime is 85973911291. The next prime is 85973911391. The reversal of 85973911385 is 58311937958.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 9822197449 + 76151713936 = 99107^2 + 275956^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 85973911385 - 2³⁰ = 84900169561 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 505728806 + ... + 505728975.

It is an arithmetic number, because the mean of its divisors is an integer number (13654680057).

Almost surely, 2^85973911385 is an apocalyptic number.

85973911385 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

It is an amenable number.

85973911385 is a deficient number, since it is larger than the sum of its proper divisors (23263529071).

85973911385 is a wasteful number, since it uses less digits than its factorization.

85973911385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1011457803.

The product of its digits is 8164800, while the sum is 59.

The spelling of 85973911385 in words is "eighty-five billion, nine hundred seventy-three million, nine hundred eleven thousand, three hundred eighty-five".