13531622613577 has 2 divisors, whose sum is σ = 13531622613578. Its totient is φ = 13531622613576.

The previous prime is 13531622613497. The next prime is 13531622613629. The reversal of 13531622613577 is 77531622613531.

It is an a-pointer prime, because the next prime (13531622613629) can be obtained adding 13531622613577 to its sum of digits (52).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9409703490576 + 4121919123001 = 3067524^2 + 2030251^2 .

It is an emirp because it is prime and its reverse (77531622613531) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13531622613577 - 2¹⁵ = 13531622580809 is a prime.

It is not a weakly prime, because it can be changed into another prime (13531622610577) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6765811306788 + 6765811306789.

It is an arithmetic number, because the mean of its divisors is an integer number (6765811306789).

Almost surely, 2^{13531622613577} is an apocalyptic number.

It is an amenable number.

13531622613577 is a deficient number, since it is larger than the sum of its proper divisors (1).

13531622613577 is an equidigital number, since it uses as much as digits as its factorization.

13531622613577 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4762800, while the sum is 52.

The spelling of 13531622613577 in words is "thirteen trillion, five hundred thirty-one billion, six hundred twenty-two million, six hundred thirteen thousand, five hundred seventy-seven".