664737010571 has 2 divisors, whose sum is σ = 664737010572. Its totient is φ = 664737010570.

The previous prime is 664737010451. The next prime is 664737010603. The reversal of 664737010571 is 175010737466.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-664737010571 is a prime.

It is not a weakly prime, because it can be changed into another prime (664737010871) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 332368505285 + 332368505286.

It is an arithmetic number, because the mean of its divisors is an integer number (332368505286).

Almost surely, 2^664737010571 is an apocalyptic number.

664737010571 is a deficient number, since it is larger than the sum of its proper divisors (1).

664737010571 is an equidigital number, since it uses as much as digits as its factorization.

664737010571 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 740880, while the sum is 47.

The spelling of 664737010571 in words is "six hundred sixty-four billion, seven hundred thirty-seven million, ten thousand, five hundred seventy-one".