11761449673009 has 9 divisors (see below), whose sum is σ = 11800941766041. Its totient is φ = 11722089335940.

The previous prime is 11761449672989. The next prime is 11761449673021. The reversal of 11761449673009 is 90037694416711.

It is a happy number.

The square root of 11761449673009 is 3429497.

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

It is not a de Polignac number, because 11761449673009 - 2²⁹ = 11760912802097 is a prime.

It is a super-2 number, since 2×11761449673009² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11761449673049) 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, 1052849994 + ... + 1052861164.

Almost surely, 2^{11761449673009} is an apocalyptic number.

11761449673009 is the 3429497-th square number.

11761449673009 is the 1714749-th centered octagonal number.

It is an amenable number.

11761449673009 is a deficient number, since it is larger than the sum of its proper divisors (39492093032).

11761449673009 is an frugal number, since it uses more digits than its factorization.

11761449673009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22956 (or 11478 counting only the distinct ones).

The product of its (nonzero) digits is 6858432, while the sum is 58.

The spelling of 11761449673009 in words is "eleven trillion, seven hundred sixty-one billion, four hundred forty-nine million, six hundred seventy-three thousand, nine".