40091251984 has 45 divisors (see below), whose sum is σ = 90371364951. Its totient is φ = 17179562400.

The previous prime is 40091251943. The next prime is 40091252011. The reversal of 40091251984 is 48915219004.

The square root of 40091251984 is 200228.

It is a perfect power (a square), and thus also a powerful number.

It is a self number, because there is not a number n which added to its sum of digits gives 40091251984.

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 8 ways as a sum of consecutive naturals, for example, 5602809 + ... + 5609959.

Almost surely, 2^40091251984 is an apocalyptic number.

40091251984 is the 200228-th square number.

It is an amenable number.

40091251984 is an abundant number, since it is smaller than the sum of its proper divisors (50280112967).

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

40091251984 is an frugal number, since it uses more digits than its factorization.

40091251984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14324 (or 7160 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 43.

The spelling of 40091251984 in words is "forty billion, ninety-one million, two hundred fifty-one thousand, nine hundred eighty-four".