85718437257 has 8 divisors (see below), whose sum is σ = 114331461984. Its totient is φ = 57125518688.

The previous prime is 85718437241. The next prime is 85718437261. The reversal of 85718437257 is 75273481758.

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

It is a cyclic number.

It is not a de Polignac number, because 85718437257 - 2⁴ = 85718437241 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 85718437197 and 85718437206.

It is not an unprimeable number, because it can be changed into a prime (85718437237) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5016588 + ... + 5033645.

It is an arithmetic number, because the mean of its divisors is an integer number (14291432748).

Almost surely, 2^85718437257 is an apocalyptic number.

It is an amenable number.

85718437257 is a deficient number, since it is larger than the sum of its proper divisors (28613024727).

85718437257 is a wasteful number, since it uses less digits than its factorization.

85718437257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10053079.

The product of its digits is 13171200, while the sum is 57.

The spelling of 85718437257 in words is "eighty-five billion, seven hundred eighteen million, four hundred thirty-seven thousand, two hundred fifty-seven".