13921859743893 has 80 divisors (see below), whose sum is σ = 21789559503360. Its totient is φ = 8848192204800.

The previous prime is 13921859743879. The next prime is 13921859743963. The reversal of 13921859743893 is 39834795812931.

13921859743893 is a `hidden beast` number, since 1 + 3 + 9 + 2 + 18 + 5 + 97 + 438 + 93 = 666.

It is not a de Polignac number, because 13921859743893 - 2¹² = 13921859739797 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13921859743793) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 44910453 + ... + 45219381.

It is an arithmetic number, because the mean of its divisors is an integer number (272369493792).

Almost surely, 2^{13921859743893} is an apocalyptic number.

It is an amenable number.

13921859743893 is a deficient number, since it is larger than the sum of its proper divisors (7867699759467).

13921859743893 is a wasteful number, since it uses less digits than its factorization.

13921859743893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 309240 (or 309231 counting only the distinct ones).

The product of its digits is 352719360, while the sum is 72.

The spelling of 13921859743893 in words is "thirteen trillion, nine hundred twenty-one billion, eight hundred fifty-nine million, seven hundred forty-three thousand, eight hundred ninety-three".