626166612120559 has 2 divisors, whose sum is σ = 626166612120560. Its totient is φ = 626166612120558.

The previous prime is 626166612120473. The next prime is 626166612120587. The reversal of 626166612120559 is 955021216661626.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 626166612120559 - 2⁷ = 626166612120431 is a prime.

It is a super-2 number, since 2×626166612120559² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (626166612120859) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 313083306060279 + 313083306060280.

It is an arithmetic number, because the mean of its divisors is an integer number (313083306060280).

Almost surely, 2^{626166612120559} is an apocalyptic number.

626166612120559 is a deficient number, since it is larger than the sum of its proper divisors (1).

626166612120559 is an equidigital number, since it uses as much as digits as its factorization.

626166612120559 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13996800, while the sum is 58.

The spelling of 626166612120559 in words is "six hundred twenty-six trillion, one hundred sixty-six billion, six hundred twelve million, one hundred twenty thousand, five hundred fifty-nine".