13320421969437 has 64 divisors (see below), whose sum is σ = 21622112697600. Its totient is φ = 8037744168960.

The previous prime is 13320421969363. The next prime is 13320421969447. The reversal of 13320421969437 is 73496912402331.

13320421969437 is a `hidden beast` number, since 1 + 3 + 320 + 4 + 219 + 69 + 43 + 7 = 666.

It is not a de Polignac number, because 13320421969437 - 2¹² = 13320421965341 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13320421969447) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 68363889 + ... + 68558457.

It is an arithmetic number, because the mean of its divisors is an integer number (337845510900).

Almost surely, 2^{13320421969437} is an apocalyptic number.

It is an amenable number.

13320421969437 is a deficient number, since it is larger than the sum of its proper divisors (8301690728163).

13320421969437 is a wasteful number, since it uses less digits than its factorization.

13320421969437 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195595 (or 195589 counting only the distinct ones).

The product of its (nonzero) digits is 5878656, while the sum is 54.

The spelling of 13320421969437 in words is "thirteen trillion, three hundred twenty billion, four hundred twenty-one million, nine hundred sixty-nine thousand, four hundred thirty-seven".