16446523536 has 45 divisors (see below), whose sum is σ = 46031730771. Its totient is φ = 5481661536.

The previous prime is 16446523493. The next prime is 16446523547. The reversal of 16446523536 is 63532564461.

The square root of 16446523536 is 128244.

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

16446523536 is a `hidden beast` number, since 1 + 64 + 4 + 6 + 52 + 3 + 536 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 16446523491 and 16446523500.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1533585 + ... + 1544271.

Almost surely, 2^16446523536 is an apocalyptic number.

16446523536 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

16446523536 is the 128244-th square number.

It is an amenable number.

16446523536 is an abundant number, since it is smaller than the sum of its proper divisors (29585207235).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16446523536 is an frugal number, since it uses more digits than its factorization.

16446523536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21388 (or 10692 counting only the distinct ones).

The product of its digits is 1555200, while the sum is 45.

The spelling of 16446523536 in words is "sixteen billion, four hundred forty-six million, five hundred twenty-three thousand, five hundred thirty-six".