40596563891 has 32 divisors (see below), whose sum is σ = 45288122880. Its totient is φ = 36152573184.

The previous prime is 40596563803. The next prime is 40596563923. The reversal of 40596563891 is 19836569504.

It is not a de Polignac number, because 40596563891 - 2³⁰ = 39522822067 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40596563801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 31493975 + ... + 31495263.

It is an arithmetic number, because the mean of its divisors is an integer number (1415253840).

Almost surely, 2^40596563891 is an apocalyptic number.

40596563891 is a deficient number, since it is larger than the sum of its proper divisors (4691558989).

40596563891 is a wasteful number, since it uses less digits than its factorization.

40596563891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1995.

The product of its (nonzero) digits is 6998400, while the sum is 56.

The spelling of 40596563891 in words is "forty billion, five hundred ninety-six million, five hundred sixty-three thousand, eight hundred ninety-one".