1664051264627 has 2 divisors, whose sum is σ = 1664051264628. Its totient is φ = 1664051264626.

The previous prime is 1664051264543. The next prime is 1664051264641. The reversal of 1664051264627 is 7264621504661.

It is a strong prime.

It is an emirp because it is prime and its reverse (7264621504661) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1664051264627 - 2⁸ = 1664051264371 is a prime.

It is a super-2 number, since 2×1664051264627² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1664051264647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 832025632313 + 832025632314.

It is an arithmetic number, because the mean of its divisors is an integer number (832025632314).

Almost surely, 2^{1664051264627} is an apocalyptic number.

1664051264627 is a deficient number, since it is larger than the sum of its proper divisors (1).

1664051264627 is an equidigital number, since it uses as much as digits as its factorization.

1664051264627 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2903040, while the sum is 50.

The spelling of 1664051264627 in words is "one trillion, six hundred sixty-four billion, fifty-one million, two hundred sixty-four thousand, six hundred twenty-seven".