660105149971 has 2 divisors, whose sum is σ = 660105149972. Its totient is φ = 660105149970.

The previous prime is 660105149941. The next prime is 660105149981. The reversal of 660105149971 is 179941501066.

660105149971 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 660105149971 - 2²⁵ = 660071595539 is a prime.

It is not a weakly prime, because it can be changed into another prime (660105149941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 330052574985 + 330052574986.

It is an arithmetic number, because the mean of its divisors is an integer number (330052574986).

Almost surely, 2^660105149971 is an apocalyptic number.

660105149971 is a deficient number, since it is larger than the sum of its proper divisors (1).

660105149971 is an equidigital number, since it uses as much as digits as its factorization.

660105149971 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 408240, while the sum is 49.

The spelling of 660105149971 in words is "six hundred sixty billion, one hundred five million, one hundred forty-nine thousand, nine hundred seventy-one".