16401624065404 has 12 divisors (see below), whose sum is σ = 30391244591904. Its totient is φ = 7718411324864.

The previous prime is 16401624065381. The next prime is 16401624065429. The reversal of 16401624065404 is 40456042610461.

It is a happy number.

It is a congruent number.

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, 120600176884 + ... + 120600177019.

It is an arithmetic number, because the mean of its divisors is an integer number (2532603715992).

Almost surely, 2^{16401624065404} is an apocalyptic number.

It is an amenable number.

16401624065404 is a deficient number, since it is larger than the sum of its proper divisors (13989620526500).

16401624065404 is a wasteful number, since it uses less digits than its factorization.

16401624065404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 241200353924 (or 241200353922 counting only the distinct ones).

The product of its (nonzero) digits is 552960, while the sum is 43.

Adding to 16401624065404 its reverse (40456042610461), we get a palindrome (56857666675865).

The spelling of 16401624065404 in words is "sixteen trillion, four hundred one billion, six hundred twenty-four million, sixty-five thousand, four hundred four".