161098713217 has 16 divisors (see below), whose sum is σ = 190562117760. Its totient is φ = 134754630912.

The previous prime is 161098713211. The next prime is 161098713241. The reversal of 161098713217 is 712317890161.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-161098713217 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (161098713211) 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, 14173048 + ... + 14184409.

It is an arithmetic number, because the mean of its divisors is an integer number (11910132360).

Almost surely, 2^161098713217 is an apocalyptic number.

It is an amenable number.

161098713217 is a deficient number, since it is larger than the sum of its proper divisors (29463404543).

161098713217 is a wasteful number, since it uses less digits than its factorization.

161098713217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28357512.

The product of its (nonzero) digits is 127008, while the sum is 46.

The spelling of 161098713217 in words is "one hundred sixty-one billion, ninety-eight million, seven hundred thirteen thousand, two hundred seventeen".