40323150918 has 80 divisors (see below), whose sum is σ = 96616533024. Its totient is φ = 12525062400.

The previous prime is 40323150911. The next prime is 40323150943. The reversal of 40323150918 is 81905132304.

40323150918 is a `hidden beast` number, since 403 + 231 + 5 + 0 + 9 + 18 = 666.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40323150911) 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 39 ways as a sum of consecutive naturals, for example, 205671 + ... + 350637.

Almost surely, 2^40323150918 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40323150918, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (48308266512).

40323150918 is an abundant number, since it is smaller than the sum of its proper divisors (56293382106).

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

40323150918 is a wasteful number, since it uses less digits than its factorization.

40323150918 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145099 (or 145090 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The spelling of 40323150918 in words is "forty billion, three hundred twenty-three million, one hundred fifty thousand, nine hundred eighteen".