40166981226 has 12 divisors (see below), whose sum is σ = 87028459362. Its totient is φ = 13388993736.

The previous prime is 40166981191. The next prime is 40166981233. The reversal of 40166981226 is 62218966104.

It can be written as a sum of positive squares in only one way, i.e., 29225612025 + 10941369201 = 170955^2 + 104601^2 .

It is a super-2 number, since 2×40166981226² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 1115749461 + ... + 1115749496.

Almost surely, 2^40166981226 is an apocalyptic number.

40166981226 is an abundant number, since it is smaller than the sum of its proper divisors (46861478136).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40166981226 is a wasteful number, since it uses less digits than its factorization.

40166981226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2231498965 (or 2231498962 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 45.

The spelling of 40166981226 in words is "forty billion, one hundred sixty-six million, nine hundred eighty-one thousand, two hundred twenty-six".