16511677648 has 20 divisors (see below), whose sum is σ = 31994647648. Its totient is φ = 8254994400.

The previous prime is 16511677643. The next prime is 16511677729. The reversal of 16511677648 is 84677611561.

It is a junction number, because it is equal to n+sod(n) for n = 16511677595 and 16511677604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16511677643) 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, 127123 + ... + 221773.

Almost surely, 2^16511677648 is an apocalyptic number.

It is an amenable number.

16511677648 is a deficient number, since it is larger than the sum of its proper divisors (15482970000).

16511677648 is a wasteful number, since it uses less digits than its factorization.

16511677648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105562 (or 105556 counting only the distinct ones).

The product of its digits is 1693440, while the sum is 52.

The spelling of 16511677648 in words is "sixteen billion, five hundred eleven million, six hundred seventy-seven thousand, six hundred forty-eight".