660941596811 has 2 divisors, whose sum is σ = 660941596812. Its totient is φ = 660941596810.

The previous prime is 660941596793. The next prime is 660941596813. The reversal of 660941596811 is 118695149066.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 660941596811 - 2¹⁴ = 660941580427 is a prime.

It is a super-4 number, since 4×660941596811⁴ (a number of 48 digits) contains 4444 as substring.

Together with 660941596813, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (660941596813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 330470798405 + 330470798406.

It is an arithmetic number, because the mean of its divisors is an integer number (330470798406).

Almost surely, 2^660941596811 is an apocalyptic number.

660941596811 is a deficient number, since it is larger than the sum of its proper divisors (1).

660941596811 is an equidigital number, since it uses as much as digits as its factorization.

660941596811 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2799360, while the sum is 56.

The spelling of 660941596811 in words is "six hundred sixty billion, nine hundred forty-one million, five hundred ninety-six thousand, eight hundred eleven".