13634691901944 has 16 divisors (see below), whose sum is σ = 34086729754920. Its totient is φ = 4544897300640.

The previous prime is 13634691901903. The next prime is 13634691901949. The reversal of 13634691901944 is 44910919643631.

It is a super-2 number, since 2×13634691901944² (a number of 27 digits) contains 22 as substring.

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 3 ways as a sum of consecutive naturals, for example, 284056081267 + ... + 284056081314.

Almost surely, 2^{13634691901944} is an apocalyptic number.

It is an amenable number.

13634691901944 is an abundant number, since it is smaller than the sum of its proper divisors (20452037852976).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13634691901944 is a wasteful number, since it uses less digits than its factorization.

13634691901944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 568112162590 (or 568112162586 counting only the distinct ones).

The product of its (nonzero) digits is 15116544, while the sum is 60.

The spelling of 13634691901944 in words is "thirteen trillion, six hundred thirty-four billion, six hundred ninety-one million, nine hundred one thousand, nine hundred forty-four".