13982740521 has 8 divisors (see below), whose sum is σ = 18652621344. Its totient is φ = 9317343360.

The previous prime is 13982740517. The next prime is 13982740537. The reversal of 13982740521 is 12504728931.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 13982740521 - 2² = 13982740517 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (13982740511) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1113631 + ... + 1126116.

It is an arithmetic number, because the mean of its divisors is an integer number (2331577668).

Almost surely, 2^13982740521 is an apocalyptic number.

It is an amenable number.

13982740521 is a deficient number, since it is larger than the sum of its proper divisors (4669880823).

13982740521 is a wasteful number, since it uses less digits than its factorization.

13982740521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2241831.

The product of its (nonzero) digits is 120960, while the sum is 42.

The spelling of 13982740521 in words is "thirteen billion, nine hundred eighty-two million, seven hundred forty thousand, five hundred twenty-one".