161260730571 has 16 divisors (see below), whose sum is σ = 215445686400. Its totient is φ = 107291678208.

The previous prime is 161260730557. The next prime is 161260730639. The reversal of 161260730571 is 175037062161.

It is not a de Polignac number, because 161260730571 - 2¹⁰ = 161260729547 is a prime.

It is not an unprimeable number, because it can be changed into a prime (161260730471) 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, 3110500 + ... + 3161918.

It is an arithmetic number, because the mean of its divisors is an integer number (13465355400).

Almost surely, 2^161260730571 is an apocalyptic number.

161260730571 is a deficient number, since it is larger than the sum of its proper divisors (54184955829).

161260730571 is a wasteful number, since it uses less digits than its factorization.

161260730571 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53498.

The product of its (nonzero) digits is 52920, while the sum is 39.

The spelling of 161260730571 in words is "one hundred sixty-one billion, two hundred sixty million, seven hundred thirty thousand, five hundred seventy-one".