160161640805 has 4 divisors (see below), whose sum is σ = 192193968972. Its totient is φ = 128129312640.

The previous prime is 160161640801. The next prime is 160161640811. The reversal of 160161640805 is 508046161061.

It is a Cunningham number, because it is equal to 400202²+1.

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

It can be written as a sum of positive squares in 2 ways, for example, as 57658574884 + 102503065921 = 240122^2 + 320161^2 .

It is not a de Polignac number, because 160161640805 - 2² = 160161640801 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (160161640801) 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, 16016164076 + ... + 16016164085.

It is an arithmetic number, because the mean of its divisors is an integer number (48048492243).

Almost surely, 2^160161640805 is an apocalyptic number.

It is an amenable number.

160161640805 is a deficient number, since it is larger than the sum of its proper divisors (32032328167).

160161640805 is an equidigital number, since it uses as much as digits as its factorization.

160161640805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32032328166.

The product of its (nonzero) digits is 34560, while the sum is 38.

The spelling of 160161640805 in words is "one hundred sixty billion, one hundred sixty-one million, six hundred forty thousand, eight hundred five".