161106666616 has 16 divisors (see below), whose sum is σ = 345228571440. Its totient is φ = 69045714240.

The previous prime is 161106666583. The next prime is 161106666619. The reversal of 161106666616 is 616666601161.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161106666619) 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, 1438452325 + ... + 1438452436.

It is an arithmetic number, because the mean of its divisors is an integer number (21576785715).

Almost surely, 2^161106666616 is an apocalyptic number.

It is an amenable number.

161106666616 is an abundant number, since it is smaller than the sum of its proper divisors (184121904824).

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

161106666616 is a wasteful number, since it uses less digits than its factorization.

161106666616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2876904774 (or 2876904770 counting only the distinct ones).

The product of its (nonzero) digits is 279936, while the sum is 46.

The spelling of 161106666616 in words is "one hundred sixty-one billion, one hundred six million, six hundred sixty-six thousand, six hundred sixteen".