40523783894 has 16 divisors (see below), whose sum is σ = 66316226256. Its totient is φ = 18418629600.

The previous prime is 40523783887. The next prime is 40523783899. The reversal of 40523783894 is 49838732504.

It is a super-2 number, since 2×40523783894² (a number of 22 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40523783899) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 311264 + ... + 421820.

It is an arithmetic number, because the mean of its divisors is an integer number (4144764141).

Almost surely, 2^40523783894 is an apocalyptic number.

40523783894 is a deficient number, since it is larger than the sum of its proper divisors (25792442362).

40523783894 is a wasteful number, since it uses less digits than its factorization.

40523783894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127231.

The product of its (nonzero) digits is 5806080, while the sum is 53.

The spelling of 40523783894 in words is "forty billion, five hundred twenty-three million, seven hundred eighty-three thousand, eight hundred ninety-four".