13445542450811 has 2 divisors, whose sum is σ = 13445542450812. Its totient is φ = 13445542450810.

The previous prime is 13445542450799. The next prime is 13445542450817. The reversal of 13445542450811 is 11805424554431.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 13445542450811 - 2³⁰ = 13444468708987 is a prime.

It is a super-2 number, since 2×13445542450811² (a number of 27 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (13445542450817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6722771225405 + 6722771225406.

It is an arithmetic number, because the mean of its divisors is an integer number (6722771225406).

Almost surely, 2^{13445542450811} is an apocalyptic number.

13445542450811 is a deficient number, since it is larger than the sum of its proper divisors (1).

13445542450811 is an equidigital number, since it uses as much as digits as its factorization.

13445542450811 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1536000, while the sum is 47.

The spelling of 13445542450811 in words is "thirteen trillion, four hundred forty-five billion, five hundred forty-two million, four hundred fifty thousand, eight hundred eleven".