40682991541 has 2 divisors, whose sum is σ = 40682991542. Its totient is φ = 40682991540.

The previous prime is 40682991527. The next prime is 40682991571. The reversal of 40682991541 is 14519928604.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 38626006225 + 2056985316 = 196535^2 + 45354^2 .

It is a cyclic number.

It is not a de Polignac number, because 40682991541 - 2⁵ = 40682991509 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40682991571) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20341495770 + 20341495771.

It is an arithmetic number, because the mean of its divisors is an integer number (20341495771).

Almost surely, 2^40682991541 is an apocalyptic number.

It is an amenable number.

40682991541 is a deficient number, since it is larger than the sum of its proper divisors (1).

40682991541 is an equidigital number, since it uses as much as digits as its factorization.

40682991541 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 622080, while the sum is 49.

The spelling of 40682991541 in words is "forty billion, six hundred eighty-two million, nine hundred ninety-one thousand, five hundred forty-one".