85384315857 has 8 divisors (see below), whose sum is σ = 118795569984. Its totient is φ = 54447969488.

The previous prime is 85384315843. The next prime is 85384315871. The reversal of 85384315857 is 75851348358.

It is an interprime number because it is at equal distance from previous prime (85384315843) and next prime (85384315871).

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-85384315857 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 85384315797 and 85384315806.

It is not an unprimeable number, because it can be changed into a prime (85384315817) 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, 618726858 + ... + 618726995.

It is an arithmetic number, because the mean of its divisors is an integer number (14849446248).

Almost surely, 2^85384315857 is an apocalyptic number.

It is an amenable number.

85384315857 is a deficient number, since it is larger than the sum of its proper divisors (33411254127).

85384315857 is a wasteful number, since it uses less digits than its factorization.

85384315857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1237453879.

The product of its digits is 16128000, while the sum is 57.

The spelling of 85384315857 in words is "eighty-five billion, three hundred eighty-four million, three hundred fifteen thousand, eight hundred fifty-seven".