13556691346895 has 16 divisors (see below), whose sum is σ = 16497340683840. Its totient is φ = 10692482438400.

The previous prime is 13556691346889. The next prime is 13556691346921. The reversal of 13556691346895 is 59864319665531.

It is not a de Polignac number, because 13556691346895 - 2¹⁰ = 13556691345871 is a prime.

It is a super-3 number, since 3×13556691346895³ (a number of 40 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Harshad number since it is a multiple of its sum of digits (71).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45472115 + ... + 45769275.

It is an arithmetic number, because the mean of its divisors is an integer number (1031083792740).

Almost surely, 2^{13556691346895} is an apocalyptic number.

13556691346895 is a deficient number, since it is larger than the sum of its proper divisors (2940649336945).

13556691346895 is a wasteful number, since it uses less digits than its factorization.

13556691346895 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 425746.

The product of its digits is 629856000, while the sum is 71.

The spelling of 13556691346895 in words is "thirteen trillion, five hundred fifty-six billion, six hundred ninety-one million, three hundred forty-six thousand, eight hundred ninety-five".