13680241391 has 4 divisors (see below), whose sum is σ = 13867642032. Its totient is φ = 13492840752.

The previous prime is 13680241363. The next prime is 13680241409. The reversal of 13680241391 is 19314208631.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 13680241391 - 2³⁰ = 12606499567 is a prime.

It is a super-2 number, since 2×13680241391² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13680241301) 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, 93700211 + ... + 93700356.

It is an arithmetic number, because the mean of its divisors is an integer number (3466910508).

Almost surely, 2^13680241391 is an apocalyptic number.

13680241391 is a deficient number, since it is larger than the sum of its proper divisors (187400641).

13680241391 is an equidigital number, since it uses as much as digits as its factorization.

13680241391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 187400640.

The product of its (nonzero) digits is 31104, while the sum is 38.

The spelling of 13680241391 in words is "thirteen billion, six hundred eighty million, two hundred forty-one thousand, three hundred ninety-one".