11764325681 has 2 divisors, whose sum is σ = 11764325682. Its totient is φ = 11764325680.

The previous prime is 11764325663. The next prime is 11764325719. The reversal of 11764325681 is 18652346711.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6759470656 + 5004855025 = 82216^2 + 70745^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11764325681 is a prime.

It is a super-2 number, since 2×11764325681² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (11764325081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5882162840 + 5882162841.

It is an arithmetic number, because the mean of its divisors is an integer number (5882162841).

Almost surely, 2^11764325681 is an apocalyptic number.

It is an amenable number.

11764325681 is a deficient number, since it is larger than the sum of its proper divisors (1).

11764325681 is an equidigital number, since it uses as much as digits as its factorization.

11764325681 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 241920, while the sum is 44.

The spelling of 11764325681 in words is "eleven billion, seven hundred sixty-four million, three hundred twenty-five thousand, six hundred eighty-one".