1648595321651 has 2 divisors, whose sum is σ = 1648595321652. Its totient is φ = 1648595321650.

The previous prime is 1648595321623. The next prime is 1648595321701. The reversal of 1648595321651 is 1561235958461.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1648595321651 - 2⁶ = 1648595321587 is a prime.

It is not a weakly prime, because it can be changed into another prime (1648595321621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 824297660825 + 824297660826.

It is an arithmetic number, because the mean of its divisors is an integer number (824297660826).

Almost surely, 2^{1648595321651} is an apocalyptic number.

1648595321651 is a deficient number, since it is larger than the sum of its proper divisors (1).

1648595321651 is an equidigital number, since it uses as much as digits as its factorization.

1648595321651 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7776000, while the sum is 56.

The spelling of 1648595321651 in words is "one trillion, six hundred forty-eight billion, five hundred ninety-five million, three hundred twenty-one thousand, six hundred fifty-one".