40555854320665 has 32 divisors (see below), whose sum is σ = 49078068480000. Its totient is φ = 32171878932480.

The previous prime is 40555854320627. The next prime is 40555854320669. The reversal of 40555854320665 is 56602345855504.

It is not a de Polignac number, because 40555854320665 - 2⁷ = 40555854320537 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40555854320669) 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 31 ways as a sum of consecutive naturals, for example, 449760874 + ... + 449851036.

It is an arithmetic number, because the mean of its divisors is an integer number (1533689640000).

Almost surely, 2^{40555854320665} is an apocalyptic number.

It is an amenable number.

40555854320665 is a deficient number, since it is larger than the sum of its proper divisors (8522214159335).

40555854320665 is a wasteful number, since it uses less digits than its factorization.

40555854320665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91857.

The product of its (nonzero) digits is 86400000, while the sum is 58.

The spelling of 40555854320665 in words is "forty trillion, five hundred fifty-five billion, eight hundred fifty-four million, three hundred twenty thousand, six hundred sixty-five".