11520407771 has 2 divisors, whose sum is σ = 11520407772. Its totient is φ = 11520407770.

The previous prime is 11520407753. The next prime is 11520407809. The reversal of 11520407771 is 17770402511.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11520407771 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (11520407671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5760203885 + 5760203886.

It is an arithmetic number, because the mean of its divisors is an integer number (5760203886).

Almost surely, 2^11520407771 is an apocalyptic number.

11520407771 is a deficient number, since it is larger than the sum of its proper divisors (1).

11520407771 is an equidigital number, since it uses as much as digits as its factorization.

11520407771 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13720, while the sum is 35.

The spelling of 11520407771 in words is "eleven billion, five hundred twenty million, four hundred seven thousand, seven hundred seventy-one".