648922286081 has 2 divisors, whose sum is σ = 648922286082. Its totient is φ = 648922286080.

The previous prime is 648922286069. The next prime is 648922286093. The reversal of 648922286081 is 180682229846.

It is a balanced prime because it is at equal distance from previous prime (648922286069) and next prime (648922286093).

It can be written as a sum of positive squares in only one way, i.e., 643069271056 + 5853015025 = 801916^2 + 76505^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-648922286081 is a prime.

It is a super-2 number, since 2×648922286081² (a number of 24 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (648922286011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 324461143040 + 324461143041.

It is an arithmetic number, because the mean of its divisors is an integer number (324461143041).

Almost surely, 2^648922286081 is an apocalyptic number.

It is an amenable number.

648922286081 is a deficient number, since it is larger than the sum of its proper divisors (1).

648922286081 is an equidigital number, since it uses as much as digits as its factorization.

648922286081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5308416, while the sum is 56.

The spelling of 648922286081 in words is "six hundred forty-eight billion, nine hundred twenty-two million, two hundred eighty-six thousand, eighty-one".