7541707811081 has 2 divisors, whose sum is σ = 7541707811082. Its totient is φ = 7541707811080.

The previous prime is 7541707811069. The next prime is 7541707811101. The reversal of 7541707811081 is 1801187071457.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3855787795456 + 3685920015625 = 1963616^2 + 1919875^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7541707811081 is a prime.

It is a super-3 number, since 3×7541707811081³ (a number of 40 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not a weakly prime, because it can be changed into another prime (7541707841081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3770853905540 + 3770853905541.

It is an arithmetic number, because the mean of its divisors is an integer number (3770853905541).

Almost surely, 2^{7541707811081} is an apocalyptic number.

It is an amenable number.

7541707811081 is a deficient number, since it is larger than the sum of its proper divisors (1).

7541707811081 is an equidigital number, since it uses as much as digits as its factorization.

7541707811081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 439040, while the sum is 50.

The spelling of 7541707811081 in words is "seven trillion, five hundred forty-one billion, seven hundred seven million, eight hundred eleven thousand, eighty-one".