626856838877053 has 2 divisors, whose sum is σ = 626856838877054. Its totient is φ = 626856838877052.

The previous prime is 626856838877039. The next prime is 626856838877057. The reversal of 626856838877053 is 350778838658626.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 618132867349284 + 8723971527769 = 24862278^2 + 2953637^2 .

It is a cyclic number.

It is not a de Polignac number, because 626856838877053 - 2⁴¹ = 624657815621501 is a prime.

It is a super-4 number, since 4×626856838877053⁴ (a number of 60 digits) contains 4444 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (626856838877057) 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, 313428419438526 + 313428419438527.

It is an arithmetic number, because the mean of its divisors is an integer number (313428419438527).

Almost surely, 2^{626856838877053} is an apocalyptic number.

It is an amenable number.

626856838877053 is a deficient number, since it is larger than the sum of its proper divisors (1).

626856838877053 is an equidigital number, since it uses as much as digits as its factorization.

626856838877053 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 19508428800, while the sum is 82.

The spelling of 626856838877053 in words is "six hundred twenty-six trillion, eight hundred fifty-six billion, eight hundred thirty-eight million, eight hundred seventy-seven thousand, fifty-three".