16061650561556 has 24 divisors (see below), whose sum is σ = 29089247040000. Its totient is φ = 7750667998304.

The previous prime is 16061650561501. The next prime is 16061650561573. The reversal of 16061650561556 is 65516505616061.

It is a super-2 number, since 2×16061650561556² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 16061650561498 and 16061650561507.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28580096 + ... + 29136663.

It is an arithmetic number, because the mean of its divisors is an integer number (1212051960000).

Almost surely, 2^{16061650561556} is an apocalyptic number.

It is an amenable number.

16061650561556 is a deficient number, since it is larger than the sum of its proper divisors (13027596478444).

16061650561556 is a wasteful number, since it uses less digits than its factorization.

16061650561556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57719191 (or 57719189 counting only the distinct ones).

The product of its (nonzero) digits is 4860000, while the sum is 53.

The spelling of 16061650561556 in words is "sixteen trillion, sixty-one billion, six hundred fifty million, five hundred sixty-one thousand, five hundred fifty-six".