13081445615 has 32 divisors (see below), whose sum is σ = 18930723840. Its totient is φ = 8483675904.

The previous prime is 13081445591. The next prime is 13081445633. The reversal of 13081445615 is 51654418031.

It is a cyclic number.

It is not a de Polignac number, because 13081445615 - 2⁶ = 13081445551 is a prime.

It is a super-2 number, since 2×13081445615² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 19649 + ... + 162938.

It is an arithmetic number, because the mean of its divisors is an integer number (591585120).

Almost surely, 2^13081445615 is an apocalyptic number.

13081445615 is a deficient number, since it is larger than the sum of its proper divisors (5849278225).

13081445615 is a wasteful number, since it uses less digits than its factorization.

13081445615 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182711.

The product of its (nonzero) digits is 57600, while the sum is 38.

The spelling of 13081445615 in words is "thirteen billion, eighty-one million, four hundred forty-five thousand, six hundred fifteen".