13891318144902 has 128 divisors (see below), whose sum is σ = 33788827376640. Its totient is φ = 4195400832000.

The previous prime is 13891318144901. The next prime is 13891318144909. The reversal of 13891318144902 is 20944181319831.

13891318144902 is a `hidden beast` number, since 1 + 3 + 8 + 9 + 13 + 181 + 449 + 0 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13891318144901) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 216239127 + ... + 216303357.

It is an arithmetic number, because the mean of its divisors is an integer number (263975213880).

Almost surely, 2^{13891318144902} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13891318144902, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16894413688320).

13891318144902 is an abundant number, since it is smaller than the sum of its proper divisors (19897509231738).

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

13891318144902 is a wasteful number, since it uses less digits than its factorization.

13891318144902 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65467 (or 65461 counting only the distinct ones).

The product of its (nonzero) digits is 1492992, while the sum is 54.

The spelling of 13891318144902 in words is "thirteen trillion, eight hundred ninety-one billion, three hundred eighteen million, one hundred forty-four thousand, nine hundred two".