160730722731 has 8 divisors (see below), whose sum is σ = 214348951440. Its totient is φ = 107133154592.

The previous prime is 160730722723. The next prime is 160730722759. The reversal of 160730722731 is 137227037061.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 160730722731 - 2³ = 160730722723 is a prime.

It is a super-2 number, since 2×160730722731² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 160730722731.

It is not an unprimeable number, because it can be changed into a prime (160730722781) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5146980 + ... + 5178113.

It is an arithmetic number, because the mean of its divisors is an integer number (26793618930).

Almost surely, 2^160730722731 is an apocalyptic number.

160730722731 is a deficient number, since it is larger than the sum of its proper divisors (53618228709).

160730722731 is a wasteful number, since it uses less digits than its factorization.

160730722731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10330285.

The product of its (nonzero) digits is 74088, while the sum is 39.

Adding to 160730722731 its reverse (137227037061), we get a palindrome (297957759792).

The spelling of 160730722731 in words is "one hundred sixty billion, seven hundred thirty million, seven hundred twenty-two thousand, seven hundred thirty-one".