85560325781 has 8 divisors (see below), whose sum is σ = 99160458624. Its totient is φ = 72304500240.

The previous prime is 85560325771. The next prime is 85560325783. The reversal of 85560325781 is 18752306558.

It is a happy number.

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

It is not a de Polignac number, because 85560325781 - 2¹⁸ = 85560063637 is a prime.

It is a super-2 number, since 2×85560325781² (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 (85560325783) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 86076290 + ... + 86077283.

It is an arithmetic number, because the mean of its divisors is an integer number (12395057328).

Almost surely, 2^85560325781 is an apocalyptic number.

It is an amenable number.

85560325781 is a deficient number, since it is larger than the sum of its proper divisors (13600132843).

85560325781 is a wasteful number, since it uses less digits than its factorization.

85560325781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172153651.

The product of its (nonzero) digits is 2016000, while the sum is 50.

The spelling of 85560325781 in words is "eighty-five billion, five hundred sixty million, three hundred twenty-five thousand, seven hundred eighty-one".