6623438190251 has 2 divisors, whose sum is σ = 6623438190252. Its totient is φ = 6623438190250.

The previous prime is 6623438190203. The next prime is 6623438190263. The reversal of 6623438190251 is 1520918343266.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6623438190251 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6623438190251.

It is not a weakly prime, because it can be changed into another prime (6623438090251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3311719095125 + 3311719095126.

It is an arithmetic number, because the mean of its divisors is an integer number (3311719095126).

Almost surely, 2^{6623438190251} is an apocalyptic number.

6623438190251 is a deficient number, since it is larger than the sum of its proper divisors (1).

6623438190251 is an equidigital number, since it uses as much as digits as its factorization.

6623438190251 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1866240, while the sum is 50.

The spelling of 6623438190251 in words is "six trillion, six hundred twenty-three billion, four hundred thirty-eight million, one hundred ninety thousand, two hundred fifty-one".