40328700691 has 2 divisors, whose sum is σ = 40328700692. Its totient is φ = 40328700690.

The previous prime is 40328700689. The next prime is 40328700707. The reversal of 40328700691 is 19600782304.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40328700691 - 2¹ = 40328700689 is a prime.

Together with 40328700689, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (40328700661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20164350345 + 20164350346.

It is an arithmetic number, because the mean of its divisors is an integer number (20164350346).

Almost surely, 2^40328700691 is an apocalyptic number.

40328700691 is a deficient number, since it is larger than the sum of its proper divisors (1).

40328700691 is an equidigital number, since it uses as much as digits as its factorization.

40328700691 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72576, while the sum is 40.

The spelling of 40328700691 in words is "forty billion, three hundred twenty-eight million, seven hundred thousand, six hundred ninety-one".