11451642007081 has 2 divisors, whose sum is σ = 11451642007082. Its totient is φ = 11451642007080.

The previous prime is 11451642006947. The next prime is 11451642007103. The reversal of 11451642007081 is 18070024615411.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11441028886681 + 10613120400 = 3382459^2 + 103020^2 .

It is an emirp because it is prime and its reverse (18070024615411) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11451642007081 - 2⁹ = 11451642006569 is a prime.

It is a super-2 number, since 2×11451642007081² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (11451642007381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5725821003540 + 5725821003541.

It is an arithmetic number, because the mean of its divisors is an integer number (5725821003541).

Almost surely, 2^{11451642007081} is an apocalyptic number.

It is an amenable number.

11451642007081 is a deficient number, since it is larger than the sum of its proper divisors (1).

11451642007081 is an equidigital number, since it uses as much as digits as its factorization.

11451642007081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 53760, while the sum is 40.

The spelling of 11451642007081 in words is "eleven trillion, four hundred fifty-one billion, six hundred forty-two million, seven thousand, eighty-one".