253111521389 has 2 divisors, whose sum is σ = 253111521390. Its totient is φ = 253111521388.

The previous prime is 253111521379. The next prime is 253111521419. The reversal of 253111521389 is 983125111352.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 145497999364 + 107613522025 = 381442^2 + 328045^2 .

It is a cyclic number.

It is not a de Polignac number, because 253111521389 - 2¹⁶ = 253111455853 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (253111521329) 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, 126555760694 + 126555760695.

It is an arithmetic number, because the mean of its divisors is an integer number (126555760695).

Almost surely, 2^253111521389 is an apocalyptic number.

It is an amenable number.

253111521389 is a deficient number, since it is larger than the sum of its proper divisors (1).

253111521389 is an equidigital number, since it uses as much as digits as its factorization.

253111521389 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 64800, while the sum is 41.

The spelling of 253111521389 in words is "two hundred fifty-three billion, one hundred eleven million, five hundred twenty-one thousand, three hundred eighty-nine".