664436734672363 has 2 divisors, whose sum is σ = 664436734672364. Its totient is φ = 664436734672362.

The previous prime is 664436734672253. The next prime is 664436734672397. The reversal of 664436734672363 is 363276437634466.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 664436734672363 - 2³³ = 664428144737771 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 664436734672292 and 664436734672301.

It is not a weakly prime, because it can be changed into another prime (664436734672463) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 332218367336181 + 332218367336182.

It is an arithmetic number, because the mean of its divisors is an integer number (332218367336182).

Almost surely, 2^{664436734672363} is an apocalyptic number.

664436734672363 is a deficient number, since it is larger than the sum of its proper divisors (1).

664436734672363 is an equidigital number, since it uses as much as digits as its factorization.

664436734672363 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3950456832, while the sum is 70.

The spelling of 664436734672363 in words is "six hundred sixty-four trillion, four hundred thirty-six billion, seven hundred thirty-four million, six hundred seventy-two thousand, three hundred sixty-three".