895640534581 has 16 divisors (see below), whose sum is σ = 974646496768. Its totient is φ = 818081856000.

The previous prime is 895640534573. The next prime is 895640534597. The reversal of 895640534581 is 185435046598.

It is a happy number.

895640534581 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 895640534581 - 2³ = 895640534573 is a prime.

It is a super-2 number, since 2×895640534581² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (895640534501) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7698676 + ... + 7814146.

It is an arithmetic number, because the mean of its divisors is an integer number (60915406048).

Almost surely, 2^895640534581 is an apocalyptic number.

It is an amenable number.

895640534581 is a deficient number, since it is larger than the sum of its proper divisors (79005962187).

895640534581 is a wasteful number, since it uses less digits than its factorization.

895640534581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121732.

The product of its (nonzero) digits is 20736000, while the sum is 58.

The spelling of 895640534581 in words is "eight hundred ninety-five billion, six hundred forty million, five hundred thirty-four thousand, five hundred eighty-one".