11197660761 has 27 divisors (see below), whose sum is σ = 18818851701. Its totient is φ = 6397393464.

The previous prime is 11197660729. The next prime is 11197660763. The reversal of 11197660761 is 16706679111.

It is a happy number.

The square root of 11197660761 is 105819.

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

It is not a de Polignac number, because 11197660761 - 2⁵ = 11197660729 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (11197660763) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 2219680 + ... + 2224718.

Almost surely, 2^11197660761 is an apocalyptic number.

11197660761 is the 105819-th square number.

11197660761 is the 52910-th centered octagonal number.

It is an amenable number.

11197660761 is a deficient number, since it is larger than the sum of its proper divisors (7621190940).

11197660761 is an frugal number, since it uses more digits than its factorization.

11197660761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10098 (or 5049 counting only the distinct ones).

The product of its (nonzero) digits is 95256, while the sum is 45.

The spelling of 11197660761 in words is "eleven billion, one hundred ninety-seven million, six hundred sixty thousand, seven hundred sixty-one".