40360247991 has 12 divisors (see below), whose sum is σ = 66626441232. Its totient is φ = 23062998816.

The previous prime is 40360247971. The next prime is 40360248023. The reversal of 40360247991 is 19974206304.

It is a happy number.

40360247991 is a `hidden beast` number, since 40 + 360 + 247 + 9 + 9 + 1 = 666.

It is not a de Polignac number, because 40360247991 - 2¹⁸ = 40359985847 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40360247971) 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 11 ways as a sum of consecutive naturals, for example, 320319366 + ... + 320319491.

It is an arithmetic number, because the mean of its divisors is an integer number (5552203436).

Almost surely, 2^40360247991 is an apocalyptic number.

40360247991 is a deficient number, since it is larger than the sum of its proper divisors (26266193241).

40360247991 is a wasteful number, since it uses less digits than its factorization.

40360247991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 640638870 (or 640638867 counting only the distinct ones).

The product of its (nonzero) digits is 326592, while the sum is 45.

The spelling of 40360247991 in words is "forty billion, three hundred sixty million, two hundred forty-seven thousand, nine hundred ninety-one".