85852844531 has 4 divisors (see below), whose sum is σ = 86655207672. Its totient is φ = 85050481392.

The previous prime is 85852844501. The next prime is 85852844537. The reversal of 85852844531 is 13544825858.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13544825858 = 2 ⋅6772412929.

It is a cyclic number.

It is not a de Polignac number, because 85852844531 - 2¹⁰ = 85852843507 is a prime.

It is a super-2 number, since 2×85852844531² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85852844537) 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, 401181410 + ... + 401181623.

It is an arithmetic number, because the mean of its divisors is an integer number (21663801918).

Almost surely, 2^85852844531 is an apocalyptic number.

85852844531 is a deficient number, since it is larger than the sum of its proper divisors (802363141).

85852844531 is a wasteful number, since it uses less digits than its factorization.

85852844531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 802363140.

The product of its digits is 6144000, while the sum is 53.

The spelling of 85852844531 in words is "eighty-five billion, eight hundred fifty-two million, eight hundred forty-four thousand, five hundred thirty-one".