40921459291 has 2 divisors, whose sum is σ = 40921459292. Its totient is φ = 40921459290.

The previous prime is 40921459279. The next prime is 40921459297. The reversal of 40921459291 is 19295412904.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 40921459291 - 2⁵ = 40921459259 is a prime.

It is not a weakly prime, because it can be changed into another prime (40921459297) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20460729645 + 20460729646.

It is an arithmetic number, because the mean of its divisors is an integer number (20460729646).

Almost surely, 2^40921459291 is an apocalyptic number.

40921459291 is a deficient number, since it is larger than the sum of its proper divisors (1).

40921459291 is an equidigital number, since it uses as much as digits as its factorization.

40921459291 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 233280, while the sum is 46.

The spelling of 40921459291 in words is "forty billion, nine hundred twenty-one million, four hundred fifty-nine thousand, two hundred ninety-one".