7257998743 has 2 divisors, whose sum is σ = 7257998744. Its totient is φ = 7257998742.

The previous prime is 7257998731. The next prime is 7257998747. The reversal of 7257998743 is 3478997527.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 7257998743 - 2²¹ = 7255901591 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7257998747) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3628999371 + 3628999372.

It is an arithmetic number, because the mean of its divisors is an integer number (3628999372).

Almost surely, 2^7257998743 is an apocalyptic number.

7257998743 is a deficient number, since it is larger than the sum of its proper divisors (1).

7257998743 is an equidigital number, since it uses as much as digits as its factorization.

7257998743 is an evil number, because the sum of its binary digits is even.

The product of its digits is 26671680, while the sum is 61.

The square root of 7257998743 is about 85193.8891177061. The cubic root of 7257998743 is about 1936.1498322178.

The spelling of 7257998743 in words is "seven billion, two hundred fifty-seven million, nine hundred ninety-eight thousand, seven hundred forty-three".