13445352257 has 2 divisors, whose sum is σ = 13445352258. Its totient is φ = 13445352256.

The previous prime is 13445352253. The next prime is 13445352317. The reversal of 13445352257 is 75225354431.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8243913616 + 5201438641 = 90796^2 + 72121^2 .

It is a cyclic number.

It is not a de Polignac number, because 13445352257 - 2² = 13445352253 is a prime.

It is not a weakly prime, because it can be changed into another prime (13445352253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6722676128 + 6722676129.

It is an arithmetic number, because the mean of its divisors is an integer number (6722676129).

Almost surely, 2^13445352257 is an apocalyptic number.

It is an amenable number.

13445352257 is a deficient number, since it is larger than the sum of its proper divisors (1).

13445352257 is an equidigital number, since it uses as much as digits as its factorization.

13445352257 is an evil number, because the sum of its binary digits is even.

The product of its digits is 504000, while the sum is 41.

The spelling of 13445352257 in words is "thirteen billion, four hundred forty-five million, three hundred fifty-two thousand, two hundred fifty-seven".