85706638071 has 8 divisors (see below), whose sum is σ = 114277380480. Its totient is φ = 57136827192.

The previous prime is 85706638067. The next prime is 85706638081. The reversal of 85706638071 is 17083660758.

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

It is not a de Polignac number, because 85706638071 - 2² = 85706638067 is a prime.

It is a super-5 number, since 5×85706638071⁵ (a number of 56 digits) contains 55555 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85706638001) 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, 21496 + ... + 414578.

It is an arithmetic number, because the mean of its divisors is an integer number (14284672560).

Almost surely, 2^85706638071 is an apocalyptic number.

85706638071 is a deficient number, since it is larger than the sum of its proper divisors (28570742409).

85706638071 is a wasteful number, since it uses less digits than its factorization.

85706638071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 465765.

The product of its (nonzero) digits is 1693440, while the sum is 51.

The spelling of 85706638071 in words is "eighty-five billion, seven hundred six million, six hundred thirty-eight thousand, seventy-one".