7572161761 has 2 divisors, whose sum is σ = 7572161762. Its totient is φ = 7572161760.

The previous prime is 7572161749. The next prime is 7572161791. The reversal of 7572161761 is 1671612757.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6935558400 + 636603361 = 83280^2 + 25231^2 .

It is an emirp because it is prime and its reverse (1671612757) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7572161761 - 2⁷ = 7572161633 is a prime.

It is a super-2 number, since 2×7572161761² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (7572161791) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3786080880 + 3786080881.

It is an arithmetic number, because the mean of its divisors is an integer number (3786080881).

Almost surely, 2^7572161761 is an apocalyptic number.

It is an amenable number.

7572161761 is a deficient number, since it is larger than the sum of its proper divisors (1).

7572161761 is an equidigital number, since it uses as much as digits as its factorization.

7572161761 is an evil number, because the sum of its binary digits is even.

The product of its digits is 123480, while the sum is 43.

The square root of 7572161761 is about 87018.1691430014. The cubic root of 7572161761 is about 1963.6916541912.

The spelling of 7572161761 in words is "seven billion, five hundred seventy-two million, one hundred sixty-one thousand, seven hundred sixty-one".