40938681852 has 96 divisors (see below), whose sum is σ = 114223314240. Its totient is φ = 12632924160.

The previous prime is 40938681851. The next prime is 40938681929. The reversal of 40938681852 is 25818683904.

40938681852 is a `hidden beast` number, since 409 + 3 + 86 + 81 + 85 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40938681851) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 70773 + ... + 294764.

It is an arithmetic number, because the mean of its divisors is an integer number (1189826190).

Almost surely, 2^40938681852 is an apocalyptic number.

It is an amenable number.

40938681852 is an abundant number, since it is smaller than the sum of its proper divisors (73284632388).

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

40938681852 is a wasteful number, since it uses less digits than its factorization.

40938681852 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 365628 (or 365620 counting only the distinct ones).

The product of its (nonzero) digits is 3317760, while the sum is 54.

The spelling of 40938681852 in words is "forty billion, nine hundred thirty-eight million, six hundred eighty-one thousand, eight hundred fifty-two".