11661066605051 has 2 divisors, whose sum is σ = 11661066605052. Its totient is φ = 11661066605050.

The previous prime is 11661066605011. The next prime is 11661066605113. The reversal of 11661066605051 is 15050666016611.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11661066605051 - 2¹⁸ = 11661066342907 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11661066604993 and 11661066605011.

It is not a weakly prime, because it can be changed into another prime (11661066605011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5830533302525 + 5830533302526.

It is an arithmetic number, because the mean of its divisors is an integer number (5830533302526).

Almost surely, 2^{11661066605051} is an apocalyptic number.

11661066605051 is a deficient number, since it is larger than the sum of its proper divisors (1).

11661066605051 is an equidigital number, since it uses as much as digits as its factorization.

11661066605051 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 194400, while the sum is 44.

The spelling of 11661066605051 in words is "eleven trillion, six hundred sixty-one billion, sixty-six million, six hundred five thousand, fifty-one".