85387374871 has 4 divisors (see below), whose sum is σ = 85402565872. Its totient is φ = 85372183872.

The previous prime is 85387374841. The next prime is 85387374881. The reversal of 85387374871 is 17847378358.

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 85387374871 - 2²³ = 85378986263 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 (85387374841) 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, 7587066 + ... + 7598311.

It is an arithmetic number, because the mean of its divisors is an integer number (21350641468).

Almost surely, 2^85387374871 is an apocalyptic number.

85387374871 is a deficient number, since it is larger than the sum of its proper divisors (15191001).

85387374871 is a wasteful number, since it uses less digits than its factorization.

85387374871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15191000.

The product of its digits is 31610880, while the sum is 61.

The spelling of 85387374871 in words is "eighty-five billion, three hundred eighty-seven million, three hundred seventy-four thousand, eight hundred seventy-one".