13421217637028 has 12 divisors (see below), whose sum is σ = 24033343210800. Its totient is φ = 6554548148232.

The previous prime is 13421217636973. The next prime is 13421217637049. The reversal of 13421217637028 is 82073671212431.

13421217637028 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39015167378 + ... + 39015167721.

It is an arithmetic number, because the mean of its divisors is an integer number (2002778600900).

Almost surely, 2^{13421217637028} is an apocalyptic number.

It is an amenable number.

13421217637028 is a deficient number, since it is larger than the sum of its proper divisors (10612125573772).

13421217637028 is a wasteful number, since it uses less digits than its factorization.

13421217637028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78030335146 (or 78030335144 counting only the distinct ones).

The product of its (nonzero) digits is 677376, while the sum is 47.

Adding to 13421217637028 its reverse (82073671212431), we get a palindrome (95494888849459).

The spelling of 13421217637028 in words is "thirteen trillion, four hundred twenty-one billion, two hundred seventeen million, six hundred thirty-seven thousand, twenty-eight".