13568782481 has 16 divisors (see below), whose sum is σ = 13890441600. Its totient is φ = 13251331200.

The previous prime is 13568782463. The next prime is 13568782499. The reversal of 13568782481 is 18428786531.

It is an interprime number because it is at equal distance from previous prime (13568782463) and next prime (13568782499).

It is a cyclic number.

It is not a de Polignac number, because 13568782481 - 2¹⁸ = 13568520337 is a prime.

It is a super-2 number, since 2×13568782481² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13568781481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8792996 + ... + 8794538.

It is an arithmetic number, because the mean of its divisors is an integer number (868152600).

Almost surely, 2^13568782481 is an apocalyptic number.

It is an amenable number.

13568782481 is a deficient number, since it is larger than the sum of its proper divisors (321659119).

13568782481 is a wasteful number, since it uses less digits than its factorization.

13568782481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2776.

The product of its digits is 2580480, while the sum is 53.

The spelling of 13568782481 in words is "thirteen billion, five hundred sixty-eight million, seven hundred eighty-two thousand, four hundred eighty-one".