665352351451 has 2 divisors, whose sum is σ = 665352351452. Its totient is φ = 665352351450.

The previous prime is 665352351397. The next prime is 665352351473. The reversal of 665352351451 is 154153253566.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 665352351451 - 2¹⁹ = 665351827163 is a prime.

It is not a weakly prime, because it can be changed into another prime (665352351481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 332676175725 + 332676175726.

It is an arithmetic number, because the mean of its divisors is an integer number (332676175726).

Almost surely, 2^665352351451 is an apocalyptic number.

665352351451 is a deficient number, since it is larger than the sum of its proper divisors (1).

665352351451 is an equidigital number, since it uses as much as digits as its factorization.

665352351451 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1620000, while the sum is 46.

The spelling of 665352351451 in words is "six hundred sixty-five billion, three hundred fifty-two million, three hundred fifty-one thousand, four hundred fifty-one".