11640697801 has 2 divisors, whose sum is σ = 11640697802. Its totient is φ = 11640697800.

The previous prime is 11640697777. The next prime is 11640697823. The reversal of 11640697801 is 10879604611.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8618337225 + 3022360576 = 92835^2 + 54976^2 .

It is a cyclic number.

It is not a de Polignac number, because 11640697801 - 2⁵ = 11640697769 is a prime.

It is not a weakly prime, because it can be changed into another prime (11640697001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5820348900 + 5820348901.

It is an arithmetic number, because the mean of its divisors is an integer number (5820348901).

Almost surely, 2^11640697801 is an apocalyptic number.

It is an amenable number.

11640697801 is a deficient number, since it is larger than the sum of its proper divisors (1).

11640697801 is an equidigital number, since it uses as much as digits as its factorization.

11640697801 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72576, while the sum is 43.

The spelling of 11640697801 in words is "eleven billion, six hundred forty million, six hundred ninety-seven thousand, eight hundred one".