40864687541 has 2 divisors, whose sum is σ = 40864687542. Its totient is φ = 40864687540.

The previous prime is 40864687529. The next prime is 40864687547. The reversal of 40864687541 is 14578646804.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 37027380625 + 3837306916 = 192425^2 + 61946^2 .

It is a cyclic number.

It is not a de Polignac number, because 40864687541 - 2¹⁰ = 40864686517 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40864687547) 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 as a sum of consecutive naturals, namely, 20432343770 + 20432343771.

It is an arithmetic number, because the mean of its divisors is an integer number (20432343771).

Almost surely, 2^40864687541 is an apocalyptic number.

It is an amenable number.

40864687541 is a deficient number, since it is larger than the sum of its proper divisors (1).

40864687541 is an equidigital number, since it uses as much as digits as its factorization.

40864687541 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5160960, while the sum is 53.

The spelling of 40864687541 in words is "forty billion, eight hundred sixty-four million, six hundred eighty-seven thousand, five hundred forty-one".