16551165610 has 24 divisors (see below), whose sum is σ = 34656115140. Its totient is φ = 5674685184.

The previous prime is 16551165599. The next prime is 16551165613. The reversal of 16551165610 is 1656115561.

It can be written as a sum of positive squares in 2 ways, for example, as 16522788681 + 28376929 = 128541^2 + 5327^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 16551165610.

It is not an unprimeable number, because it can be changed into a prime (16551165613) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16888455 + ... + 16889434.

Almost surely, 2^16551165610 is an apocalyptic number.

16551165610 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

16551165610 is an abundant number, since it is smaller than the sum of its proper divisors (18104949530).

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

16551165610 is a wasteful number, since it uses less digits than its factorization.

16551165610 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33777910 (or 33777903 counting only the distinct ones).

The product of its (nonzero) digits is 27000, while the sum is 37.

The spelling of 16551165610 in words is "sixteen billion, five hundred fifty-one million, one hundred sixty-five thousand, six hundred ten".