13958649577 has 2 divisors, whose sum is σ = 13958649578. Its totient is φ = 13958649576.

The previous prime is 13958649571. The next prime is 13958649619. The reversal of 13958649577 is 77594685931.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8402288896 + 5556360681 = 91664^2 + 74541^2 .

It is a cyclic number.

It is not a de Polignac number, because 13958649577 - 2¹¹ = 13958647529 is a prime.

It is not a weakly prime, because it can be changed into another prime (13958649571) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6979324788 + 6979324789.

It is an arithmetic number, because the mean of its divisors is an integer number (6979324789).

Almost surely, 2^13958649577 is an apocalyptic number.

It is an amenable number.

13958649577 is a deficient number, since it is larger than the sum of its proper divisors (1).

13958649577 is an equidigital number, since it uses as much as digits as its factorization.

13958649577 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 57153600, while the sum is 64.

The spelling of 13958649577 in words is "thirteen billion, nine hundred fifty-eight million, six hundred forty-nine thousand, five hundred seventy-seven".