41820765985 has 4 divisors (see below), whose sum is σ = 50184919188. Its totient is φ = 33456612784.

The previous prime is 41820765971. The next prime is 41820766007. The reversal of 41820765985 is 58956702814.

It is a happy number.

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 11063673856 + 30757092129 = 105184^2 + 175377^2 .

It is a cyclic number.

It is not a de Polignac number, because 41820765985 - 2⁵ = 41820765953 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4182076594 + ... + 4182076603.

It is an arithmetic number, because the mean of its divisors is an integer number (12546229797).

Almost surely, 2^41820765985 is an apocalyptic number.

It is an amenable number.

41820765985 is a deficient number, since it is larger than the sum of its proper divisors (8364153203).

41820765985 is an equidigital number, since it uses as much as digits as its factorization.

41820765985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8364153202.

The product of its (nonzero) digits is 4838400, while the sum is 55.

The spelling of 41820765985 in words is "forty-one billion, eight hundred twenty million, seven hundred sixty-five thousand, nine hundred eighty-five".