11552065691 has 2 divisors, whose sum is σ = 11552065692. Its totient is φ = 11552065690.

The previous prime is 11552065687. The next prime is 11552065727. The reversal of 11552065691 is 19656025511.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11552065691 - 2² = 11552065687 is a prime.

It is not a weakly prime, because it can be changed into another prime (11552065661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5776032845 + 5776032846.

It is an arithmetic number, because the mean of its divisors is an integer number (5776032846).

Almost surely, 2^11552065691 is an apocalyptic number.

11552065691 is a deficient number, since it is larger than the sum of its proper divisors (1).

11552065691 is an equidigital number, since it uses as much as digits as its factorization.

11552065691 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 81000, while the sum is 41.

The spelling of 11552065691 in words is "eleven billion, five hundred fifty-two million, sixty-five thousand, six hundred ninety-one".