40161045212 has 12 divisors (see below), whose sum is σ = 72705340680. Its totient is φ = 19388090736.

The previous prime is 40161045203. The next prime is 40161045227. The reversal of 40161045212 is 21254016104.

It is a super-2 number, since 2×40161045212² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 173107838 + ... + 173108069.

It is an arithmetic number, because the mean of its divisors is an integer number (6058778390).

Almost surely, 2^40161045212 is an apocalyptic number.

It is an amenable number.

40161045212 is a deficient number, since it is larger than the sum of its proper divisors (32544295468).

40161045212 is a wasteful number, since it uses less digits than its factorization.

40161045212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 346215940 (or 346215938 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 26.

The spelling of 40161045212 in words is "forty billion, one hundred sixty-one million, forty-five thousand, two hundred twelve".