161106656103 has 80 divisors (see below), whose sum is σ = 250910451616. Its totient is φ = 102935266560.

The previous prime is 161106656093. The next prime is 161106656147. The reversal of 161106656103 is 301656601161.

It is not a de Polignac number, because 161106656103 - 2⁸ = 161106655847 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161106656603) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 130239201 + ... + 130240437.

Almost surely, 2^161106656103 is an apocalyptic number.

161106656103 is a deficient number, since it is larger than the sum of its proper divisors (89803795513).

161106656103 is a wasteful number, since it uses less digits than its factorization.

161106656103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1966 (or 1957 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 36.

The spelling of 161106656103 in words is "one hundred sixty-one billion, one hundred six million, six hundred fifty-six thousand, one hundred three".