13143756381 has 16 divisors (see below), whose sum is σ = 20052480000. Its totient is φ = 7501755888.

The previous prime is 13143756323. The next prime is 13143756403. The reversal of 13143756381 is 18365734131.

It is not a de Polignac number, because 13143756381 - 2⁶ = 13143756317 is a prime.

It is a super-2 number, since 2×13143756381² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13143756481) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 355381 + ... + 390618.

It is an arithmetic number, because the mean of its divisors is an integer number (1253280000).

Almost surely, 2^13143756381 is an apocalyptic number.

It is an amenable number.

13143756381 is a deficient number, since it is larger than the sum of its proper divisors (6908723619).

13143756381 is an equidigital number, since it uses as much as digits as its factorization.

13143756381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 746848.

The product of its digits is 181440, while the sum is 42.

The spelling of 13143756381 in words is "thirteen billion, one hundred forty-three million, seven hundred fifty-six thousand, three hundred eighty-one".