13721984748381 has 192 divisors, whose sum is σ = 24354855813120. Its totient is φ = 6792316715520.

The previous prime is 13721984748359. The next prime is 13721984748389. The reversal of 13721984748381 is 18384748912731.

It is not a de Polignac number, because 13721984748381 - 2⁷ = 13721984748253 is a prime.

It is a super-2 number, since 2×13721984748381² (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 (13721984748389) by changing a digit.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 3490708986 + ... + 3490712916.

It is an arithmetic number, because the mean of its divisors is an integer number (126848207360).

Almost surely, 2^{13721984748381} is an apocalyptic number.

It is an amenable number.

13721984748381 is a deficient number, since it is larger than the sum of its proper divisors (10632871064739).

13721984748381 is a wasteful number, since it uses less digits than its factorization.

13721984748381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4864 (or 4857 counting only the distinct ones).

The product of its digits is 65028096, while the sum is 66.

The spelling of 13721984748381 in words is "thirteen trillion, seven hundred twenty-one billion, nine hundred eighty-four million, seven hundred forty-eight thousand, three hundred eighty-one".