13634691901943 has 24 divisors (see below), whose sum is σ = 16686736691184. Its totient is φ = 11093675241600.

The previous prime is 13634691901903. The next prime is 13634691901949. The reversal of 13634691901943 is 34910919643631.

It is not a de Polignac number, because 13634691901943 - 2⁸ = 13634691901687 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13634691901949) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 91639253 + ... + 91787918.

It is an arithmetic number, because the mean of its divisors is an integer number (695280695466).

Almost surely, 2^{13634691901943} is an apocalyptic number.

13634691901943 is a deficient number, since it is larger than the sum of its proper divisors (3052044789241).

13634691901943 is a wasteful number, since it uses less digits than its factorization.

13634691901943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 183427263 (or 183427256 counting only the distinct ones).

The product of its (nonzero) digits is 11337408, while the sum is 59.

The spelling of 13634691901943 in words is "thirteen trillion, six hundred thirty-four billion, six hundred ninety-one million, nine hundred one thousand, nine hundred forty-three".