11523328457 has 2 divisors, whose sum is σ = 11523328458. Its totient is φ = 11523328456.

The previous prime is 11523328451. The next prime is 11523328483. The reversal of 11523328457 is 75482332511.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10622188096 + 901140361 = 103064^2 + 30019^2 .

It is an emirp because it is prime and its reverse (75482332511) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11523328457 - 2¹⁰ = 11523327433 is a prime.

It is not a weakly prime, because it can be changed into another prime (11523328451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5761664228 + 5761664229.

It is an arithmetic number, because the mean of its divisors is an integer number (5761664229).

Almost surely, 2^11523328457 is an apocalyptic number.

It is an amenable number.

11523328457 is a deficient number, since it is larger than the sum of its proper divisors (1).

11523328457 is an equidigital number, since it uses as much as digits as its factorization.

11523328457 is an evil number, because the sum of its binary digits is even.

The product of its digits is 201600, while the sum is 41.

The spelling of 11523328457 in words is "eleven billion, five hundred twenty-three million, three hundred twenty-eight thousand, four hundred fifty-seven".