1195875660721 has 27 divisors (see below), whose sum is σ = 1441011969579. Its totient is φ = 989506483728.

The previous prime is 1195875660719. The next prime is 1195875660799. The reversal of 1195875660721 is 1270665785911.

The square root of 1195875660721 is 1093561.

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., 627088188321 + 568787472400 = 791889^2 + 754180^2 .

It is not a de Polignac number, because 1195875660721 - 2¹ = 1195875660719 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1195875660701) 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, 221990190 + ... + 221995576.

Almost surely, 2^{1195875660721} is an apocalyptic number.

1195875660721 is the 1093561-st square number.

1195875660721 is the 546781-st centered octagonal number.

It is an amenable number.

1195875660721 is a deficient number, since it is larger than the sum of its proper divisors (245136308858).

1195875660721 is an frugal number, since it uses more digits than its factorization.

1195875660721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10846 (or 5423 counting only the distinct ones).

The product of its (nonzero) digits is 6350400, while the sum is 58.

The spelling of 1195875660721 in words is "one trillion, one hundred ninety-five billion, eight hundred seventy-five million, six hundred sixty thousand, seven hundred twenty-one".