40166252546873 has 4 divisors (see below), whose sum is σ = 40223551053348. Its totient is φ = 40108954040400.

The previous prime is 40166252546851. The next prime is 40166252546887. The reversal of 40166252546873 is 37864525266104.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 36271325314624 + 3894927232249 = 6022568^2 + 1973557^2 .

It is a cyclic number.

It is not a de Polignac number, because 40166252546873 - 2¹⁴ = 40166252530489 is a prime.

It is a super-2 number, since 2×40166252546873² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40166252546813) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28649252186 + ... + 28649253587.

It is an arithmetic number, because the mean of its divisors is an integer number (10055887763337).

Almost surely, 2^{40166252546873} is an apocalyptic number.

It is an amenable number.

40166252546873 is a deficient number, since it is larger than the sum of its proper divisors (57298506475).

40166252546873 is an equidigital number, since it uses as much as digits as its factorization.

40166252546873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57298506474.

The product of its (nonzero) digits is 58060800, while the sum is 59.

The spelling of 40166252546873 in words is "forty trillion, one hundred sixty-six billion, two hundred fifty-two million, five hundred forty-six thousand, eight hundred seventy-three".