40165271226 has 56 divisors (see below), whose sum is σ = 90442479744. Its totient is φ = 13371833160.

The previous prime is 40165271219. The next prime is 40165271239. The reversal of 40165271226 is 62217256104.

It is a happy number.

40165271226 is a `hidden beast` number, since 4 + 0 + 1 + 6 + 527 + 122 + 6 = 666.

It is a super-2 number, since 2×40165271226² (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 (17) of ones.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 1189111 + ... + 1222421.

Almost surely, 2^40165271226 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40165271226, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45221239872).

40165271226 is an abundant number, since it is smaller than the sum of its proper divisors (50277208518).

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

40165271226 is an equidigital number, since it uses as much as digits as its factorization.

40165271226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34158 (or 34143 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 36.

It can be divided in two parts, 401652 and 71226, that added together give a triangular number (472878 = T₉₇₂).

The spelling of 40165271226 in words is "forty billion, one hundred sixty-five million, two hundred seventy-one thousand, two hundred twenty-six".