306623622263389 has 2 divisors, whose sum is σ = 306623622263390. Its totient is φ = 306623622263388.

The previous prime is 306623622263363. The next prime is 306623622263509. The reversal of 306623622263389 is 983362226326603.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 212239968497764 + 94383653765625 = 14568458^2 + 9715125^2 .

It is a cyclic number.

It is not a de Polignac number, because 306623622263389 - 2²⁷ = 306623488045661 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (306623622263359) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 153311811131694 + 153311811131695.

It is an arithmetic number, because the mean of its divisors is an integer number (153311811131695).

Almost surely, 2^{306623622263389} is an apocalyptic number.

It is an amenable number.

306623622263389 is a deficient number, since it is larger than the sum of its proper divisors (1).

306623622263389 is an equidigital number, since it uses as much as digits as its factorization.

306623622263389 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 120932352, while the sum is 61.

The spelling of 306623622263389 in words is "three hundred six trillion, six hundred twenty-three billion, six hundred twenty-two million, two hundred sixty-three thousand, three hundred eighty-nine".