10811658521281 has 2 divisors, whose sum is σ = 10811658521282. Its totient is φ = 10811658521280.

The previous prime is 10811658521201. The next prime is 10811658521297. The reversal of 10811658521281 is 18212585611801.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10801082250000 + 10576271281 = 3286500^2 + 102841^2 .

It is a cyclic number.

It is not a de Polignac number, because 10811658521281 - 2¹⁷ = 10811658390209 is a prime.

It is a super-2 number, since 2×10811658521281² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (10811658521201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5405829260640 + 5405829260641.

It is an arithmetic number, because the mean of its divisors is an integer number (5405829260641).

Almost surely, 2^{10811658521281} is an apocalyptic number.

It is an amenable number.

10811658521281 is a deficient number, since it is larger than the sum of its proper divisors (1).

10811658521281 is an equidigital number, since it uses as much as digits as its factorization.

10811658521281 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 307200, while the sum is 49.

The spelling of 10811658521281 in words is "ten trillion, eight hundred eleven billion, six hundred fifty-eight million, five hundred twenty-one thousand, two hundred eighty-one".