11520642641449 has 2 divisors, whose sum is σ = 11520642641450. Its totient is φ = 11520642641448.

The previous prime is 11520642641429. The next prime is 11520642641483. The reversal of 11520642641449 is 94414624602511.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7076493788224 + 4444148853225 = 2660168^2 + 2108115^2 .

It is a cyclic number.

It is not a de Polignac number, because 11520642641449 - 2¹³ = 11520642633257 is a prime.

It is not a weakly prime, because it can be changed into another prime (11520642641429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5760321320724 + 5760321320725.

It is an arithmetic number, because the mean of its divisors is an integer number (5760321320725).

Almost surely, 2^{11520642641449} is an apocalyptic number.

It is an amenable number.

11520642641449 is a deficient number, since it is larger than the sum of its proper divisors (1).

11520642641449 is an equidigital number, since it uses as much as digits as its factorization.

11520642641449 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1658880, while the sum is 49.

The spelling of 11520642641449 in words is "eleven trillion, five hundred twenty billion, six hundred forty-two million, six hundred forty-one thousand, four hundred forty-nine".