40585508491 has 16 divisors (see below), whose sum is σ = 45712171008. Its totient is φ = 35712532800.

The previous prime is 40585508471. The next prime is 40585508597. The reversal of 40585508491 is 19480558504.

It is a cyclic number.

It is not a de Polignac number, because 40585508491 - 2⁵ = 40585508459 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40585508441) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 297015 + ... + 411568.

It is an arithmetic number, because the mean of its divisors is an integer number (2857010688).

Almost surely, 2^40585508491 is an apocalyptic number.

40585508491 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

40585508491 is a deficient number, since it is larger than the sum of its proper divisors (5126662517).

40585508491 is a wasteful number, since it uses less digits than its factorization.

40585508491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 708762.

The product of its (nonzero) digits is 1152000, while the sum is 49.

The spelling of 40585508491 in words is "forty billion, five hundred eighty-five million, five hundred eight thousand, four hundred ninety-one".