40287818450 has 24 divisors (see below), whose sum is σ = 81747647280. Its totient is φ = 14650115600.

The previous prime is 40287818437. The next prime is 40287818533. The reversal of 40287818450 is 5481878204.

It is a hoax number, since the sum of its digits (47) coincides with the sum of the digits of its distinct prime factors.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 40287818395 and 40287818404.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 36624740 + ... + 36625839.

It is an arithmetic number, because the mean of its divisors is an integer number (3406151970).

Almost surely, 2^40287818450 is an apocalyptic number.

40287818450 is an abundant number, since it is smaller than the sum of its proper divisors (41459828830).

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

40287818450 is a wasteful number, since it uses less digits than its factorization.

40287818450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73250602 (or 73250597 counting only the distinct ones).

The product of its (nonzero) digits is 573440, while the sum is 47.

The spelling of 40287818450 in words is "forty billion, two hundred eighty-seven million, eight hundred eighteen thousand, four hundred fifty".