10660211075581 has 2 divisors, whose sum is σ = 10660211075582. Its totient is φ = 10660211075580.

The previous prime is 10660211075557. The next prime is 10660211075603. The reversal of 10660211075581 is 18557011206601.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10489339625625 + 170871449956 = 3238725^2 + 413366^2 .

It is a cyclic number.

It is not a de Polignac number, because 10660211075581 - 2²⁷ = 10660076857853 is a prime.

It is a super-2 number, since 2×10660211075581² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10660211070581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5330105537790 + 5330105537791.

It is an arithmetic number, because the mean of its divisors is an integer number (5330105537791).

Almost surely, 2^{10660211075581} is an apocalyptic number.

It is an amenable number.

10660211075581 is a deficient number, since it is larger than the sum of its proper divisors (1).

10660211075581 is an equidigital number, since it uses as much as digits as its factorization.

10660211075581 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 100800, while the sum is 43.

The spelling of 10660211075581 in words is "ten trillion, six hundred sixty billion, two hundred eleven million, seventy-five thousand, five hundred eighty-one".