85699747381247 has 4 divisors (see below), whose sum is σ = 85714907434200. Its totient is φ = 85684587328296.

The previous prime is 85699747381207. The next prime is 85699747381267. The reversal of 85699747381247 is 74218374799658.

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 85699747381247 - 2¹⁶ = 85699747315711 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 (85699747381207) 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, 7580017997 + ... + 7580029302.

It is an arithmetic number, because the mean of its divisors is an integer number (21428726858550).

Almost surely, 2^{85699747381247} is an apocalyptic number.

85699747381247 is a deficient number, since it is larger than the sum of its proper divisors (15160052953).

85699747381247 is a wasteful number, since it uses less digits than its factorization.

85699747381247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15160052952.

The product of its digits is 5120962560, while the sum is 80.

The spelling of 85699747381247 in words is "eighty-five trillion, six hundred ninety-nine billion, seven hundred forty-seven million, three hundred eighty-one thousand, two hundred forty-seven".