627635265074789 has 2 divisors, whose sum is σ = 627635265074790. Its totient is φ = 627635265074788.

The previous prime is 627635265074771. The next prime is 627635265074791. The reversal of 627635265074789 is 987470562536726.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 432492665345764 + 195142599729025 = 20796458^2 + 13969345^2 .

It is a cyclic number.

It is not a de Polignac number, because 627635265074789 - 2⁸ = 627635265074533 is a prime.

Together with 627635265074791, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (627635265074759) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 313817632537394 + 313817632537395.

It is an arithmetic number, because the mean of its divisors is an integer number (313817632537395).

Almost surely, 2^{627635265074789} is an apocalyptic number.

It is an amenable number.

627635265074789 is a deficient number, since it is larger than the sum of its proper divisors (1).

627635265074789 is an equidigital number, since it uses as much as digits as its factorization.

627635265074789 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6401203200, while the sum is 77.

The spelling of 627635265074789 in words is "six hundred twenty-seven trillion, six hundred thirty-five billion, two hundred sixty-five million, seventy-four thousand, seven hundred eighty-nine".