1161672240481 has 9 divisors (see below), whose sum is σ = 1181095086873. Its totient is φ = 1142563764720.

The previous prime is 1161672240479. The next prime is 1161672240497. The reversal of 1161672240481 is 1840422761611.

The square root of 1161672240481 is 1077809.

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

It can be written as a sum of positive squares in 4 ways, for example, as 744149494881 + 417522745600 = 862641^2 + 646160^2 .

It is not a de Polignac number, because 1161672240481 - 2¹ = 1161672240479 is a prime.

It is a super-2 number, since 2×1161672240481² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1161672240881) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 65737515 + ... + 65755183.

Almost surely, 2^{1161672240481} is an apocalyptic number.

1161672240481 is the 1077809-th square number.

1161672240481 is the 538905-th centered octagonal number.

It is an amenable number.

1161672240481 is a deficient number, since it is larger than the sum of its proper divisors (19422846392).

1161672240481 is an frugal number, since it uses more digits than its factorization.

1161672240481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35460 (or 17730 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 43.

The spelling of 1161672240481 in words is "one trillion, one hundred sixty-one billion, six hundred seventy-two million, two hundred forty thousand, four hundred eighty-one".