40805486863817 has 12 divisors (see below), whose sum is σ = 44319315027024. Its totient is φ = 37552806822960.

The previous prime is 40805486863787. The next prime is 40805486863829. The reversal of 40805486863817 is 71836868450804.

It is not a de Polignac number, because 40805486863817 - 2¹⁰ = 40805486862793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40805486863837) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 364676063 + ... + 364787940.

It is an arithmetic number, because the mean of its divisors is an integer number (3693276252252).

Almost surely, 2^{40805486863817} is an apocalyptic number.

It is an amenable number.

40805486863817 is a deficient number, since it is larger than the sum of its proper divisors (3513828163207).

40805486863817 is a wasteful number, since it uses less digits than its factorization.

40805486863817 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 729464360 (or 729464347 counting only the distinct ones).

The product of its (nonzero) digits is 247726080, while the sum is 68.

The spelling of 40805486863817 in words is "forty trillion, eight hundred five billion, four hundred eighty-six million, eight hundred sixty-three thousand, eight hundred seventeen".