1616166105556 has 12 divisors (see below), whose sum is σ = 2831395291200. Its totient is φ = 807196022360.

The previous prime is 1616166105539. The next prime is 1616166105557. The reversal of 1616166105556 is 6555016616161.

It is a super-2 number, since 2×1616166105556² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1616166105557) 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, 221753506 + ... + 221760793.

It is an arithmetic number, because the mean of its divisors is an integer number (235949607600).

Almost surely, 2^{1616166105556} is an apocalyptic number.

It is an amenable number.

1616166105556 is a deficient number, since it is larger than the sum of its proper divisors (1215229185644).

1616166105556 is a wasteful number, since it uses less digits than its factorization.

1616166105556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 443515214 (or 443515212 counting only the distinct ones).

The product of its (nonzero) digits is 972000, while the sum is 49.

The spelling of 1616166105556 in words is "one trillion, six hundred sixteen billion, one hundred sixty-six million, one hundred five thousand, five hundred fifty-six".