16560661734 has 20 divisors (see below), whose sum is σ = 37108149804. Its totient is φ = 5520220524.

The previous prime is 16560661727. The next prime is 16560661751. The reversal of 16560661734 is 43716606561.

16560661734 is a `hidden beast` number, since 1 + 6 + 5 + 606 + 6 + 1 + 7 + 34 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 16560661734.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 51112992 + ... + 51113315.

Almost surely, 2^16560661734 is an apocalyptic number.

16560661734 is an abundant number, since it is smaller than the sum of its proper divisors (20547488070).

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

16560661734 is a wasteful number, since it uses less digits than its factorization.

16560661734 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102226321 (or 102226312 counting only the distinct ones).

The product of its (nonzero) digits is 544320, while the sum is 45.

The spelling of 16560661734 in words is "sixteen billion, five hundred sixty million, six hundred sixty-one thousand, seven hundred thirty-four".