40940782643172 has 96 divisors (see below), whose sum is σ = 100933371399168. Its totient is φ = 12889857844864.

The previous prime is 40940782643171. The next prime is 40940782643203. The reversal of 40940782643172 is 27134628704904.

40940782643172 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×40940782643172² (a number of 28 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (57) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (40940782643171) 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 31 ways as a sum of consecutive naturals, for example, 45438598 + ... + 46330850.

It is an arithmetic number, because the mean of its divisors is an integer number (1051389285408).

Almost surely, 2^{40940782643172} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40940782643172, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (50466685699584).

40940782643172 is an abundant number, since it is smaller than the sum of its proper divisors (59992588755996).

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

40940782643172 is a wasteful number, since it uses less digits than its factorization.

40940782643172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 894369 (or 894367 counting only the distinct ones).

The product of its (nonzero) digits is 16257024, while the sum is 57.

The spelling of 40940782643172 in words is "forty trillion, nine hundred forty billion, seven hundred eighty-two million, six hundred forty-three thousand, one hundred seventy-two".