11520642120551 has 2 divisors, whose sum is σ = 11520642120552. Its totient is φ = 11520642120550.

The previous prime is 11520642120539. The next prime is 11520642120667. The reversal of 11520642120551 is 15502124602511.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11520642120551 - 2³⁰ = 11519568378727 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11520642120451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5760321060275 + 5760321060276.

It is an arithmetic number, because the mean of its divisors is an integer number (5760321060276).

Almost surely, 2^{11520642120551} is an apocalyptic number.

11520642120551 is a deficient number, since it is larger than the sum of its proper divisors (1).

11520642120551 is an equidigital number, since it uses as much as digits as its factorization.

11520642120551 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24000, while the sum is 35.

The spelling of 11520642120551 in words is "eleven trillion, five hundred twenty billion, six hundred forty-two million, one hundred twenty thousand, five hundred fifty-one".