13646790081525 has 24 divisors (see below), whose sum is σ = 22567608052864. Its totient is φ = 7276702521600.

The previous prime is 13646790081517. The next prime is 13646790081641. The reversal of 13646790081525 is 52518009764631.

It is not a de Polignac number, because 13646790081525 - 2³ = 13646790081517 is a prime.

It is a super-2 number, since 2×13646790081525² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

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 23 ways as a sum of consecutive naturals, for example, 19472404 + ... + 20161053.

It is a 1-persistent number, because it is pandigital, but 2⋅13646790081525 = 27293580163050 is not.

Almost surely, 2^{13646790081525} is an apocalyptic number.

13646790081525 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13646790081525 is a deficient number, since it is larger than the sum of its proper divisors (8920817971339).

13646790081525 is a wasteful number, since it uses less digits than its factorization.

13646790081525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39638061 (or 39638056 counting only the distinct ones).

The product of its (nonzero) digits is 10886400, while the sum is 57.

The spelling of 13646790081525 in words is "thirteen trillion, six hundred forty-six billion, seven hundred ninety million, eighty-one thousand, five hundred twenty-five".