40166021843775 has 72 divisors (see below), whose sum is σ = 72577250270096. Its totient is φ = 21233369548800.

The previous prime is 40166021843767. The next prime is 40166021843789. The reversal of 40166021843775 is 57734812066104.

40166021843775 is a `hidden beast` number, since 4 + 0 + 16 + 602 + 18 + 4 + 3 + 7 + 7 + 5 = 666.

It is not a de Polignac number, because 40166021843775 - 2³ = 40166021843767 is a prime.

It is a super-2 number, since 2×40166021843775² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 12211695 + ... + 15147855.

Almost surely, 2^{40166021843775} is an apocalyptic number.

40166021843775 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

40166021843775 is a deficient number, since it is larger than the sum of its proper divisors (32411228426321).

40166021843775 is a wasteful number, since it uses less digits than its factorization.

40166021843775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2936713 (or 2936705 counting only the distinct ones).

The product of its (nonzero) digits is 6773760, while the sum is 54.

The spelling of 40166021843775 in words is "forty trillion, one hundred sixty-six billion, twenty-one million, eight hundred forty-three thousand, seven hundred seventy-five".