40651808291 has 2 divisors, whose sum is σ = 40651808292. Its totient is φ = 40651808290.

The previous prime is 40651808273. The next prime is 40651808341. The reversal of 40651808291 is 19280815604.

40651808291 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 40651808291 - 2¹⁰ = 40651807267 is a prime.

It is not a weakly prime, because it can be changed into another prime (40651808201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20325904145 + 20325904146.

It is an arithmetic number, because the mean of its divisors is an integer number (20325904146).

Almost surely, 2^40651808291 is an apocalyptic number.

40651808291 is a deficient number, since it is larger than the sum of its proper divisors (1).

40651808291 is an equidigital number, since it uses as much as digits as its factorization.

40651808291 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 138240, while the sum is 44.

The spelling of 40651808291 in words is "forty billion, six hundred fifty-one million, eight hundred eight thousand, two hundred ninety-one".