161055465603 has 16 divisors (see below), whose sum is σ = 215972352000. Its totient is φ = 106755005120.

The previous prime is 161055465499. The next prime is 161055465617. The reversal of 161055465603 is 306564550161.

It is a cyclic number.

It is not a de Polignac number, because 161055465603 - 2⁹ = 161055465091 is a prime.

It is not an unprimeable number, because it can be changed into a prime (161055466603) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1099423 + ... + 1237271.

It is an arithmetic number, because the mean of its divisors is an integer number (13498272000).

Almost surely, 2^161055465603 is an apocalyptic number.

161055465603 is a deficient number, since it is larger than the sum of its proper divisors (54916886397).

161055465603 is a wasteful number, since it uses less digits than its factorization.

161055465603 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140082.

The product of its (nonzero) digits is 324000, while the sum is 42.

The spelling of 161055465603 in words is "one hundred sixty-one billion, fifty-five million, four hundred sixty-five thousand, six hundred three".