16401279504356 has 12 divisors (see below), whose sum is σ = 28702467725568. Its totient is φ = 8200574439912.

The previous prime is 16401279504289. The next prime is 16401279504359. The reversal of 16401279504356 is 65340597210461.

It is a junction number, because it is equal to n+sod(n) for n = 16401279504298 and 16401279504307.

It is not an unprimeable number, because it can be changed into a prime (16401279504359) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15760856 + ... + 16769231.

It is an arithmetic number, because the mean of its divisors is an integer number (2391872310464).

Almost surely, 2^{16401279504356} is an apocalyptic number.

It is an amenable number.

16401279504356 is a deficient number, since it is larger than the sum of its proper divisors (12301188221212).

16401279504356 is a wasteful number, since it uses less digits than its factorization.

16401279504356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32656138 (or 32656136 counting only the distinct ones).

The product of its (nonzero) digits is 5443200, while the sum is 53.

The spelling of 16401279504356 in words is "sixteen trillion, four hundred one billion, two hundred seventy-nine million, five hundred four thousand, three hundred fifty-six".