40245031999 has 4 divisors (see below), whose sum is σ = 40469864760. Its totient is φ = 40020199240.

The previous prime is 40245031987. The next prime is 40245032021. The reversal of 40245031999 is 99913054204.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 40245031999 - 2⁹ = 40245031487 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40245031499) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 112416112 + ... + 112416469.

It is an arithmetic number, because the mean of its divisors is an integer number (10117466190).

Almost surely, 2^40245031999 is an apocalyptic number.

40245031999 is a deficient number, since it is larger than the sum of its proper divisors (224832761).

40245031999 is a wasteful number, since it uses less digits than its factorization.

40245031999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 224832760.

The product of its (nonzero) digits is 349920, while the sum is 46.

The spelling of 40245031999 in words is "forty billion, two hundred forty-five million, thirty-one thousand, nine hundred ninety-nine".