41381920845 has 64 divisors (see below), whose sum is σ = 75235065600. Its totient is φ = 21574667520.

The previous prime is 41381920837. The next prime is 41381920871. The reversal of 41381920845 is 54802918314.

41381920845 is a `hidden beast` number, since 413 + 8 + 192 + 0 + 8 + 45 = 666.

It is not a de Polignac number, because 41381920845 - 2³ = 41381920837 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 41381920845.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1326891 + ... + 1357719.

It is an arithmetic number, because the mean of its divisors is an integer number (1175547900).

Almost surely, 2^41381920845 is an apocalyptic number.

41381920845 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

41381920845 is a deficient number, since it is larger than the sum of its proper divisors (33853144755).

41381920845 is a wasteful number, since it uses less digits than its factorization.

41381920845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31067 (or 31061 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 45.

The spelling of 41381920845 in words is "forty-one billion, three hundred eighty-one million, nine hundred twenty thousand, eight hundred forty-five".