626242056360049 has 2 divisors, whose sum is σ = 626242056360050. Its totient is φ = 626242056360048.

The previous prime is 626242056360047. The next prime is 626242056360131. The reversal of 626242056360049 is 940063650242626.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 344242010137600 + 282000046222449 = 18553760^2 + 16792857^2 .

It is a cyclic number.

It is not a de Polignac number, because 626242056360049 - 2¹ = 626242056360047 is a prime.

It is a super-2 number, since 2×626242056360049² (a number of 30 digits) contains 22 as substring.

Together with 626242056360047, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (626242056360047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 313121028180024 + 313121028180025.

It is an arithmetic number, because the mean of its divisors is an integer number (313121028180025).

Almost surely, 2^{626242056360049} is an apocalyptic number.

It is an amenable number.

626242056360049 is a deficient number, since it is larger than the sum of its proper divisors (1).

626242056360049 is an equidigital number, since it uses as much as digits as its factorization.

626242056360049 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 22394880, while the sum is 55.

The spelling of 626242056360049 in words is "six hundred twenty-six trillion, two hundred forty-two billion, fifty-six million, three hundred sixty thousand, forty-nine".