2066246655251 has 2 divisors, whose sum is σ = 2066246655252. Its totient is φ = 2066246655250.

The previous prime is 2066246655167. The next prime is 2066246655293. The reversal of 2066246655251 is 1525566426602.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2066246655251 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2066246655251.

It is not a weakly prime, because it can be changed into another prime (2066246658251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1033123327625 + 1033123327626.

It is an arithmetic number, because the mean of its divisors is an integer number (1033123327626).

Almost surely, 2^{2066246655251} is an apocalyptic number.

2066246655251 is a deficient number, since it is larger than the sum of its proper divisors (1).

2066246655251 is an equidigital number, since it uses as much as digits as its factorization.

2066246655251 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184000, while the sum is 50.

The spelling of 2066246655251 in words is "two trillion, sixty-six billion, two hundred forty-six million, six hundred fifty-five thousand, two hundred fifty-one".