1257229528339 has 2 divisors, whose sum is σ = 1257229528340. Its totient is φ = 1257229528338.

The previous prime is 1257229528319. The next prime is 1257229528441. The reversal of 1257229528339 is 9338259227521.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1257229528339 - 2¹⁹ = 1257229004051 is a prime.

It is not a weakly prime, because it can be changed into another prime (1257229528319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 628614764169 + 628614764170.

It is an arithmetic number, because the mean of its divisors is an integer number (628614764170).

Almost surely, 2^{1257229528339} is an apocalyptic number.

1257229528339 is a deficient number, since it is larger than the sum of its proper divisors (1).

1257229528339 is an equidigital number, since it uses as much as digits as its factorization.

1257229528339 is an evil number, because the sum of its binary digits is even.

The product of its digits is 16329600, while the sum is 58.

The spelling of 1257229528339 in words is "one trillion, two hundred fifty-seven billion, two hundred twenty-nine million, five hundred twenty-eight thousand, three hundred thirty-nine".