40866841587816 has 24 divisors (see below), whose sum is σ = 110681029300530. Its totient is φ = 13622280529248.

The previous prime is 40866841587799. The next prime is 40866841587851. The reversal of 40866841587816 is 61878514866804.

40866841587816 is a `hidden beast` number, since 4 + 0 + 86 + 68 + 415 + 8 + 78 + 1 + 6 = 666.

It can be written as a sum of positive squares in only one way, i.e., 39332389574916 + 1534452012900 = 6271554^2 + 1238730^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is a Harshad number since it is a multiple of its sum of digits (72), and also a Moran number because the ratio is a prime number: 567595022053 = 40866841587816 / (4 + 0 + 8 + 6 + 6 + 8 + 4 + 1 + 5 + 8 + 7 + 8 + 1 + 6).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 283797510955 + ... + 283797511098.

Almost surely, 2^{40866841587816} is an apocalyptic number.

It is an amenable number.

40866841587816 is an abundant number, since it is smaller than the sum of its proper divisors (69814187712714).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40866841587816 is a wasteful number, since it uses less digits than its factorization.

40866841587816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 567595022065 (or 567595022058 counting only the distinct ones).

The product of its (nonzero) digits is 495452160, while the sum is 72.

The spelling of 40866841587816 in words is "forty trillion, eight hundred sixty-six billion, eight hundred forty-one million, five hundred eighty-seven thousand, eight hundred sixteen".