11543034457 has 2 divisors, whose sum is σ = 11543034458. Its totient is φ = 11543034456.

The previous prime is 11543034439. The next prime is 11543034511. The reversal of 11543034457 is 75443034511.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10815168016 + 727866441 = 103996^2 + 26979^2 .

It is a cyclic number.

It is not a de Polignac number, because 11543034457 - 2²³ = 11534645849 is a prime.

It is not a weakly prime, because it can be changed into another prime (11543034427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5771517228 + 5771517229.

It is an arithmetic number, because the mean of its divisors is an integer number (5771517229).

Almost surely, 2^11543034457 is an apocalyptic number.

It is an amenable number.

11543034457 is a deficient number, since it is larger than the sum of its proper divisors (1).

11543034457 is an equidigital number, since it uses as much as digits as its factorization.

11543034457 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 100800, while the sum is 37.

Adding to 11543034457 its reverse (75443034511), we get a palindrome (86986068968).

The spelling of 11543034457 in words is "eleven billion, five hundred forty-three million, thirty-four thousand, four hundred fifty-seven".