85182572641 has 4 divisors (see below), whose sum is σ = 87484804372. Its totient is φ = 82880340912.

The previous prime is 85182572633. The next prime is 85182572659. The reversal of 85182572641 is 14627528158.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 71289000000 + 13893572641 = 267000^2 + 117871^2 .

It is a cyclic number.

It is not a de Polignac number, because 85182572641 - 2³ = 85182572633 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85182572621) 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, 1151115810 + ... + 1151115883.

It is an arithmetic number, because the mean of its divisors is an integer number (21871201093).

Almost surely, 2^85182572641 is an apocalyptic number.

It is an amenable number.

85182572641 is a deficient number, since it is larger than the sum of its proper divisors (2302231731).

85182572641 is a wasteful number, since it uses less digits than its factorization.

85182572641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2302231730.

The product of its digits is 1075200, while the sum is 49.

The spelling of 85182572641 in words is "eighty-five billion, one hundred eighty-two million, five hundred seventy-two thousand, six hundred forty-one".