40851586841 has 4 divisors (see below), whose sum is σ = 43994016612. Its totient is φ = 37709157072.

The previous prime is 40851586807. The next prime is 40851586849. The reversal of 40851586841 is 14868515804.

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 7880290441 + 32971296400 = 88771^2 + 181580^2 .

It is a cyclic number.

It is not a de Polignac number, because 40851586841 - 2¹⁴ = 40851570457 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 40851586841.

It is not an unprimeable number, because it can be changed into a prime (40851586849) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1571214866 + ... + 1571214891.

It is an arithmetic number, because the mean of its divisors is an integer number (10998504153).

Almost surely, 2^40851586841 is an apocalyptic number.

It is an amenable number.

40851586841 is a deficient number, since it is larger than the sum of its proper divisors (3142429771).

40851586841 is a wasteful number, since it uses less digits than its factorization.

40851586841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3142429770.

The product of its (nonzero) digits is 1228800, while the sum is 50.

The spelling of 40851586841 in words is "forty billion, eight hundred fifty-one million, five hundred eighty-six thousand, eight hundred forty-one".