13999286007617 has 16 divisors (see below), whose sum is σ = 14153364330000. Its totient is φ = 13845410611200.

The previous prime is 13999286007613. The next prime is 13999286007643. The reversal of 13999286007617 is 71670068299931.

It can be written as a sum of positive squares in 8 ways, for example, as 11865527041 + 13987420480576 = 108929^2 + 3739976^2 .

It is a cyclic number.

It is not a de Polignac number, because 13999286007617 - 2² = 13999286007613 is a prime.

It is a super-2 number, since 2×13999286007617² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13999286007613) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1056623009 + ... + 1056636257.

It is an arithmetic number, because the mean of its divisors is an integer number (884585270625).

Almost surely, 2^{13999286007617} is an apocalyptic number.

It is an amenable number.

13999286007617 is a deficient number, since it is larger than the sum of its proper divisors (154078322383).

13999286007617 is a wasteful number, since it uses less digits than its factorization.

13999286007617 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20036.

The product of its (nonzero) digits is 61725888, while the sum is 68.

The spelling of 13999286007617 in words is "thirteen trillion, nine hundred ninety-nine billion, two hundred eighty-six million, seven thousand, six hundred seventeen".