11451642002081 has 2 divisors, whose sum is σ = 11451642002082. Its totient is φ = 11451642002080.

The previous prime is 11451642001997. The next prime is 11451642002107. The reversal of 11451642002081 is 18020024615411.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6330658566400 + 5120983435681 = 2516080^2 + 2262959^2 .

It is a cyclic number.

It is not a de Polignac number, because 11451642002081 - 2³⁴ = 11434462132897 is a prime.

It is a super-2 number, since 2×11451642002081² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (11451642007081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5725821001040 + 5725821001041.

It is an arithmetic number, because the mean of its divisors is an integer number (5725821001041).

Almost surely, 2^{11451642002081} is an apocalyptic number.

It is an amenable number.

11451642002081 is a deficient number, since it is larger than the sum of its proper divisors (1).

11451642002081 is an equidigital number, since it uses as much as digits as its factorization.

11451642002081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15360, while the sum is 35.

Adding to 11451642002081 its reverse (18020024615411), we get a palindrome (29471666617492).

The spelling of 11451642002081 in words is "eleven trillion, four hundred fifty-one billion, six hundred forty-two million, two thousand, eighty-one".