11520642120667 has 2 divisors, whose sum is σ = 11520642120668. Its totient is φ = 11520642120666.

The previous prime is 11520642120551. The next prime is 11520642120677. The reversal of 11520642120667 is 76602124602511.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11520642120667 - 2⁷ = 11520642120539 is a prime.

It is not a weakly prime, because it can be changed into another prime (11520642120677) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5760321060333 + 5760321060334.

It is an arithmetic number, because the mean of its divisors is an integer number (5760321060334).

Almost surely, 2^{11520642120667} is an apocalyptic number.

11520642120667 is a deficient number, since it is larger than the sum of its proper divisors (1).

11520642120667 is an equidigital number, since it uses as much as digits as its factorization.

11520642120667 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 241920, while the sum is 43.

The spelling of 11520642120667 in words is "eleven trillion, five hundred twenty billion, six hundred forty-two million, one hundred twenty thousand, six hundred sixty-seven".