13501543457 has 2 divisors, whose sum is σ = 13501543458. Its totient is φ = 13501543456.

The previous prime is 13501543411. The next prime is 13501543481. The reversal of 13501543457 is 75434510531.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13088275216 + 413268241 = 114404^2 + 20329^2 .

It is a cyclic number.

It is not a de Polignac number, because 13501543457 - 2¹² = 13501539361 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13501543457.

It is not a weakly prime, because it can be changed into another prime (13501543487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6750771728 + 6750771729.

It is an arithmetic number, because the mean of its divisors is an integer number (6750771729).

Almost surely, 2^13501543457 is an apocalyptic number.

It is an amenable number.

13501543457 is a deficient number, since it is larger than the sum of its proper divisors (1).

13501543457 is an equidigital number, since it uses as much as digits as its factorization.

13501543457 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 126000, while the sum is 38.

The spelling of 13501543457 in words is "thirteen billion, five hundred one million, five hundred forty-three thousand, four hundred fifty-seven".