11901223005577 has 2 divisors, whose sum is σ = 11901223005578. Its totient is φ = 11901223005576.

The previous prime is 11901223005559. The next prime is 11901223005643. The reversal of 11901223005577 is 77550032210911.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5961527757376 + 5939695248201 = 2441624^2 + 2437149^2 .

It is a cyclic number.

It is not a de Polignac number, because 11901223005577 - 2¹¹ = 11901223003529 is a prime.

It is not a weakly prime, because it can be changed into another prime (11901223000577) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5950611502788 + 5950611502789.

It is an arithmetic number, because the mean of its divisors is an integer number (5950611502789).

Almost surely, 2^{11901223005577} is an apocalyptic number.

It is an amenable number.

11901223005577 is a deficient number, since it is larger than the sum of its proper divisors (1).

11901223005577 is an equidigital number, since it uses as much as digits as its factorization.

11901223005577 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 132300, while the sum is 43.

The spelling of 11901223005577 in words is "eleven trillion, nine hundred one billion, two hundred twenty-three million, five thousand, five hundred seventy-seven".