16504605007396 has 81 divisors (see below), whose sum is σ = 32445602810257. Its totient is φ = 7340605391680.

The previous prime is 16504605007393. The next prime is 16504605007421. The reversal of 16504605007396 is 69370050640561.

The square root of 16504605007396 is 4062586.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 2338715669796 + 14165889337600 = 1529286^2 + 3763760^2 .

It is a super-2 number, since 2×16504605007396² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16504605007393) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 4200711960 + ... + 4200715888.

Almost surely, 2^{16504605007396} is an apocalyptic number.

16504605007396 is the 4062586-th square number.

It is an amenable number.

16504605007396 is a deficient number, since it is larger than the sum of its proper divisors (15940997802861).

16504605007396 is an frugal number, since it uses more digits than its factorization.

16504605007396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7978 (or 3989 counting only the distinct ones).

The product of its (nonzero) digits is 4082400, while the sum is 52.

The spelling of 16504605007396 in words is "sixteen trillion, five hundred four billion, six hundred five million, seven thousand, three hundred ninety-six".