6011150166661 has 2 divisors, whose sum is σ = 6011150166662. Its totient is φ = 6011150166660.

The previous prime is 6011150166599. The next prime is 6011150166719. The reversal of 6011150166661 is 1666610511106.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3789664250436 + 2221485916225 = 1946706^2 + 1490465^2 .

It is a cyclic number.

It is not a de Polignac number, because 6011150166661 - 2²³ = 6011141778053 is a prime.

It is a super-2 number, since 2×6011150166661² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6011150166361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3005575083330 + 3005575083331.

It is an arithmetic number, because the mean of its divisors is an integer number (3005575083331).

Almost surely, 2^{6011150166661} is an apocalyptic number.

It is an amenable number.

6011150166661 is a deficient number, since it is larger than the sum of its proper divisors (1).

6011150166661 is an equidigital number, since it uses as much as digits as its factorization.

6011150166661 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 38880, while the sum is 40.

Adding to 6011150166661 its reverse (1666610511106), we get a palindrome (7677760677767).

The spelling of 6011150166661 in words is "six trillion, eleven billion, one hundred fifty million, one hundred sixty-six thousand, six hundred sixty-one".