40166116607021 has 6 divisors (see below), whose sum is σ = 41121935500590. Its totient is φ = 39232020870168.

The previous prime is 40166116606999. The next prime is 40166116607041. The reversal of 40166116607021 is 12070661166104.

It can be written as a sum of positive squares in only one way, i.e., 27459643638025 + 12706472968996 = 5240195^2 + 3564614^2 .

It is not a de Polignac number, because 40166116607021 - 2¹⁸ = 40166116344877 is a prime.

It is a super-2 number, since 2×40166116607021² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 40166116607021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40166116607041) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10861576466 + ... + 10861580163.

It is an arithmetic number, because the mean of its divisors is an integer number (6853655916765).

Almost surely, 2^{40166116607021} is an apocalyptic number.

It is an amenable number.

40166116607021 is a deficient number, since it is larger than the sum of its proper divisors (955818893569).

40166116607021 is an equidigital number, since it uses as much as digits as its factorization.

40166116607021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21723156715 (or 21723156672 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 41.

The spelling of 40166116607021 in words is "forty trillion, one hundred sixty-six billion, one hundred sixteen million, six hundred seven thousand, twenty-one".