13971879524 has 6 divisors (see below), whose sum is σ = 24450789174. Its totient is φ = 6985939760.

The previous prime is 13971879497. The next prime is 13971879527. The reversal of 13971879524 is 42597817931.

It can be written as a sum of positive squares in only one way, i.e., 10906042624 + 3065836900 = 104432^2 + 55370^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 13971879524.

It is not an unprimeable number, because it can be changed into a prime (13971879527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1746484937 + ... + 1746484944.

It is an arithmetic number, because the mean of its divisors is an integer number (4075131529).

Almost surely, 2^13971879524 is an apocalyptic number.

It is an amenable number.

13971879524 is a deficient number, since it is larger than the sum of its proper divisors (10478909650).

13971879524 is a wasteful number, since it uses less digits than its factorization.

13971879524 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3492969885 (or 3492969883 counting only the distinct ones).

The product of its digits is 3810240, while the sum is 56.

The spelling of 13971879524 in words is "thirteen billion, nine hundred seventy-one million, eight hundred seventy-nine thousand, five hundred twenty-four".