648922049771 has 2 divisors, whose sum is σ = 648922049772. Its totient is φ = 648922049770.

The previous prime is 648922049707. The next prime is 648922049821. The reversal of 648922049771 is 177940229846.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 648922049771 - 2⁶ = 648922049707 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 648922049771.

It is not a weakly prime, because it can be changed into another prime (648922040771) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 324461024885 + 324461024886.

It is an arithmetic number, because the mean of its divisors is an integer number (324461024886).

Almost surely, 2^648922049771 is an apocalyptic number.

648922049771 is a deficient number, since it is larger than the sum of its proper divisors (1).

648922049771 is an equidigital number, since it uses as much as digits as its factorization.

648922049771 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12192768, while the sum is 59.

The spelling of 648922049771 in words is "six hundred forty-eight billion, nine hundred twenty-two million, forty-nine thousand, seven hundred seventy-one".