40863876985 has 4 divisors (see below), whose sum is σ = 49036652388. Its totient is φ = 32691101584.

The previous prime is 40863876979. The next prime is 40863877009. The reversal of 40863876985 is 58967836804.

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

It can be written as a sum of positive squares in 2 ways, for example, as 11846798649 + 29017078336 = 108843^2 + 170344^2 .

It is a cyclic number.

It is not a de Polignac number, because 40863876985 - 2⁵ = 40863876953 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 4086387694 + ... + 4086387703.

It is an arithmetic number, because the mean of its divisors is an integer number (12259163097).

Almost surely, 2^40863876985 is an apocalyptic number.

It is an amenable number.

40863876985 is a deficient number, since it is larger than the sum of its proper divisors (8172775403).

40863876985 is an equidigital number, since it uses as much as digits as its factorization.

40863876985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8172775402.

The product of its (nonzero) digits is 69672960, while the sum is 64.

The spelling of 40863876985 in words is "forty billion, eight hundred sixty-three million, eight hundred seventy-six thousand, nine hundred eighty-five".