85341432781 has 16 divisors (see below), whose sum is σ = 95345859456. Its totient is φ = 75733000000.

The previous prime is 85341432773. The next prime is 85341432791. The reversal of 85341432781 is 18723414358.

It is a cyclic number.

It is not a de Polignac number, because 85341432781 - 2³ = 85341432773 is a prime.

It is a super-2 number, since 2×85341432781² (a number of 23 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 (85341432721) 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, 462070 + ... + 619831.

It is an arithmetic number, because the mean of its divisors is an integer number (5959116216).

Almost surely, 2^85341432781 is an apocalyptic number.

It is an amenable number.

85341432781 is a deficient number, since it is larger than the sum of its proper divisors (10004426675).

85341432781 is a wasteful number, since it uses less digits than its factorization.

85341432781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1082084.

The product of its digits is 645120, while the sum is 46.

The spelling of 85341432781 in words is "eighty-five billion, three hundred forty-one million, four hundred thirty-two thousand, seven hundred eighty-one".