40868017499 has 4 divisors (see below), whose sum is σ = 41360403336. Its totient is φ = 40375631664.

The previous prime is 40868017447. The next prime is 40868017511. The reversal of 40868017499 is 99471086804.

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 40868017499 - 2²⁸ = 40599582043 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40868047499) 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, 246192794 + ... + 246192959.

It is an arithmetic number, because the mean of its divisors is an integer number (10340100834).

Almost surely, 2^40868017499 is an apocalyptic number.

40868017499 is a deficient number, since it is larger than the sum of its proper divisors (492385837).

40868017499 is an equidigital number, since it uses as much as digits as its factorization.

40868017499 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 492385836.

The product of its (nonzero) digits is 3483648, while the sum is 56.

The spelling of 40868017499 in words is "forty billion, eight hundred sixty-eight million, seventeen thousand, four hundred ninety-nine".