240253005491 has 2 divisors, whose sum is σ = 240253005492. Its totient is φ = 240253005490.

The previous prime is 240253005413. The next prime is 240253005511. The reversal of 240253005491 is 194500352042.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-240253005491 is a prime.

It is not a weakly prime, because it can be changed into another prime (240253005401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 120126502745 + 120126502746.

It is an arithmetic number, because the mean of its divisors is an integer number (120126502746).

Almost surely, 2^240253005491 is an apocalyptic number.

240253005491 is a deficient number, since it is larger than the sum of its proper divisors (1).

240253005491 is an equidigital number, since it uses as much as digits as its factorization.

240253005491 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 43200, while the sum is 35.

The spelling of 240253005491 in words is "two hundred forty billion, two hundred fifty-three million, five thousand, four hundred ninety-one".