623211266389 has 2 divisors, whose sum is σ = 623211266390. Its totient is φ = 623211266388.

The previous prime is 623211266333. The next prime is 623211266393. The reversal of 623211266389 is 983662112326.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 605504972164 + 17706294225 = 778142^2 + 133065^2 .

It is a cyclic number.

It is not a de Polignac number, because 623211266389 - 2⁹ = 623211265877 is a prime.

It is a super-2 number, since 2×623211266389² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (623211266189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 311605633194 + 311605633195.

It is an arithmetic number, because the mean of its divisors is an integer number (311605633195).

Almost surely, 2^623211266389 is an apocalyptic number.

It is an amenable number.

623211266389 is a deficient number, since it is larger than the sum of its proper divisors (1).

623211266389 is an equidigital number, since it uses as much as digits as its factorization.

623211266389 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1119744, while the sum is 49.

The spelling of 623211266389 in words is "six hundred twenty-three billion, two hundred eleven million, two hundred sixty-six thousand, three hundred eighty-nine".