40166044233261 has 16 divisors (see below), whose sum is σ = 53611582286400. Its totient is φ = 26748936592128.

The previous prime is 40166044233251. The next prime is 40166044233313. The reversal of 40166044233261 is 16233244066104.

40166044233261 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 40166044233261 - 2⁹ = 40166044232749 is a prime.

It is a super-2 number, since 2×40166044233261² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40166044233251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 81055995 + ... + 81550023.

It is an arithmetic number, because the mean of its divisors is an integer number (3350723892900).

Almost surely, 2^{40166044233261} is an apocalyptic number.

It is an amenable number.

40166044233261 is a deficient number, since it is larger than the sum of its proper divisors (13445538053139).

40166044233261 is a wasteful number, since it uses less digits than its factorization.

40166044233261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 522748.

The product of its (nonzero) digits is 497664, while the sum is 42.

Adding to 40166044233261 its reverse (16233244066104), we get a palindrome (56399288299365).

The spelling of 40166044233261 in words is "forty trillion, one hundred sixty-six billion, forty-four million, two hundred thirty-three thousand, two hundred sixty-one".