13477614411581 has 2 divisors, whose sum is σ = 13477614411582. Its totient is φ = 13477614411580.

The previous prime is 13477614411523. The next prime is 13477614411587. The reversal of 13477614411581 is 18511441677431.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9587903516356 + 3889710895225 = 3096434^2 + 1972235^2 .

It is an emirp because it is prime and its reverse (18511441677431) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13477614411581 - 2²⁶ = 13477547302717 is a prime.

It is a super-2 number, since 2×13477614411581² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13477614411587) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6738807205790 + 6738807205791.

It is an arithmetic number, because the mean of its divisors is an integer number (6738807205791).

Almost surely, 2^{13477614411581} is an apocalyptic number.

It is an amenable number.

13477614411581 is a deficient number, since it is larger than the sum of its proper divisors (1).

13477614411581 is an equidigital number, since it uses as much as digits as its factorization.

13477614411581 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2257920, while the sum is 53.

The spelling of 13477614411581 in words is "thirteen trillion, four hundred seventy-seven billion, six hundred fourteen million, four hundred eleven thousand, five hundred eighty-one".