161046560987 has 4 divisors (see below), whose sum is σ = 173434758000. Its totient is φ = 148658363976.

The previous prime is 161046560933. The next prime is 161046561019. The reversal of 161046560987 is 789065640161.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-161046560987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (161046562987) 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, 6194098487 + ... + 6194098512.

It is an arithmetic number, because the mean of its divisors is an integer number (43358689500).

Almost surely, 2^161046560987 is an apocalyptic number.

161046560987 is a deficient number, since it is larger than the sum of its proper divisors (12388197013).

161046560987 is a wasteful number, since it uses less digits than its factorization.

161046560987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12388197012.

The product of its (nonzero) digits is 2177280, while the sum is 53.

The spelling of 161046560987 in words is "one hundred sixty-one billion, forty-six million, five hundred sixty thousand, nine hundred eighty-seven".