160321761604 has 9 divisors (see below), whose sum is σ = 280564484221. Its totient is φ = 80160480400.

The previous prime is 160321761601. The next prime is 160321761689. The reversal of 160321761604 is 406167123061.

The square root of 160321761604 is 400402.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 7534587204 + 152787174400 = 86802^2 + 390880^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (160321761601) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 700704 + ... + 900904.

Almost surely, 2^160321761604 is an apocalyptic number.

160321761604 is the 400402-nd square number.

It is an amenable number.

160321761604 is a deficient number, since it is larger than the sum of its proper divisors (120242722617).

160321761604 is an frugal number, since it uses more digits than its factorization.

160321761604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 400406 (or 200203 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 37.

Adding to 160321761604 its reverse (406167123061), we get a palindrome (566488884665).

The spelling of 160321761604 in words is "one hundred sixty billion, three hundred twenty-one million, seven hundred sixty-one thousand, six hundred four".