626467764641 has 2 divisors, whose sum is σ = 626467764642. Its totient is φ = 626467764640.

The previous prime is 626467764607. The next prime is 626467764697. The reversal of 626467764641 is 146467764626.

It is a happy number.

626467764641 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 623886718225 + 2581046416 = 789865^2 + 50804^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-626467764641 is a prime.

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 (226467764641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 313233882320 + 313233882321.

It is an arithmetic number, because the mean of its divisors is an integer number (313233882321).

Almost surely, 2^626467764641 is an apocalyptic number.

It is an amenable number.

626467764641 is a deficient number, since it is larger than the sum of its proper divisors (1).

626467764641 is an equidigital number, since it uses as much as digits as its factorization.

626467764641 is an evil number, because the sum of its binary digits is even.

The product of its digits is 48771072, while the sum is 59.

It can be divided in two parts, 62646 and 7764641, that added together give a palindrome (7827287).

The spelling of 626467764641 in words is "six hundred twenty-six billion, four hundred sixty-seven million, seven hundred sixty-four thousand, six hundred forty-one".