7257120267389 has 2 divisors, whose sum is σ = 7257120267390. Its totient is φ = 7257120267388.

The previous prime is 7257120267361. The next prime is 7257120267413. The reversal of 7257120267389 is 9837620217527.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4168110144025 + 3089010123364 = 2041595^2 + 1757558^2 .

It is a cyclic number.

It is not a de Polignac number, because 7257120267389 - 2¹² = 7257120263293 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7257120267359) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3628560133694 + 3628560133695.

It is an arithmetic number, because the mean of its divisors is an integer number (3628560133695).

Almost surely, 2^{7257120267389} is an apocalyptic number.

It is an amenable number.

7257120267389 is a deficient number, since it is larger than the sum of its proper divisors (1).

7257120267389 is an equidigital number, since it uses as much as digits as its factorization.

7257120267389 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17781120, while the sum is 59.

The spelling of 7257120267389 in words is "seven trillion, two hundred fifty-seven billion, one hundred twenty million, two hundred sixty-seven thousand, three hundred eighty-nine".