626856838871047 has 2 divisors, whose sum is σ = 626856838871048. Its totient is φ = 626856838871046.

The previous prime is 626856838871027. The next prime is 626856838871099. The reversal of 626856838871047 is 740178838658626.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 626856838871047 - 2¹⁹ = 626856838346759 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (626856838871027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 313428419435523 + 313428419435524.

It is an arithmetic number, because the mean of its divisors is an integer number (313428419435524).

Almost surely, 2^{626856838871047} is an apocalyptic number.

626856838871047 is a deficient number, since it is larger than the sum of its proper divisors (1).

626856838871047 is an equidigital number, since it uses as much as digits as its factorization.

626856838871047 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5202247680, while the sum is 79.

The spelling of 626856838871047 in words is "six hundred twenty-six trillion, eight hundred fifty-six billion, eight hundred thirty-eight million, eight hundred seventy-one thousand, forty-seven".