85850071187 has 4 divisors (see below), whose sum is σ = 85854608376. Its totient is φ = 85845534000.

The previous prime is 85850071171. The next prime is 85850071201. The reversal of 85850071187 is 78117005858.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 78117005858 = 2 ⋅39058502929.

It is a cyclic number.

It is not a de Polignac number, because 85850071187 - 2⁴ = 85850071171 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85850071117) 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, 2240093 + ... + 2278094.

It is an arithmetic number, because the mean of its divisors is an integer number (21463652094).

Almost surely, 2^85850071187 is an apocalyptic number.

85850071187 is a deficient number, since it is larger than the sum of its proper divisors (4537189).

85850071187 is a wasteful number, since it uses less digits than its factorization.

85850071187 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4537188.

The product of its (nonzero) digits is 627200, while the sum is 50.

The spelling of 85850071187 in words is "eighty-five billion, eight hundred fifty million, seventy-one thousand, one hundred eighty-seven".