7240255346591 has 2 divisors, whose sum is σ = 7240255346592. Its totient is φ = 7240255346590.

The previous prime is 7240255346563. The next prime is 7240255346617. The reversal of 7240255346591 is 1956435520427.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (1956435520427) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7240255346591 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7240255343591) 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, 3620127673295 + 3620127673296.

It is an arithmetic number, because the mean of its divisors is an integer number (3620127673296).

Almost surely, 2^{7240255346591} is an apocalyptic number.

7240255346591 is a deficient number, since it is larger than the sum of its proper divisors (1).

7240255346591 is an equidigital number, since it uses as much as digits as its factorization.

7240255346591 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9072000, while the sum is 53.

The spelling of 7240255346591 in words is "seven trillion, two hundred forty billion, two hundred fifty-five million, three hundred forty-six thousand, five hundred ninety-one".