660671101543 has 2 divisors, whose sum is σ = 660671101544. Its totient is φ = 660671101542.

The previous prime is 660671101537. The next prime is 660671101549. The reversal of 660671101543 is 345101176066.

It is a balanced prime because it is at equal distance from previous prime (660671101537) and next prime (660671101549).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-660671101543 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 660671101496 and 660671101505.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (660671101549) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 330335550771 + 330335550772.

It is an arithmetic number, because the mean of its divisors is an integer number (330335550772).

Almost surely, 2^660671101543 is an apocalyptic number.

660671101543 is a deficient number, since it is larger than the sum of its proper divisors (1).

660671101543 is an equidigital number, since it uses as much as digits as its factorization.

660671101543 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 90720, while the sum is 40.

The spelling of 660671101543 in words is "six hundred sixty billion, six hundred seventy-one million, one hundred one thousand, five hundred forty-three".