38455663684589 has 2 divisors, whose sum is σ = 38455663684590. Its totient is φ = 38455663684588.

The previous prime is 38455663684337. The next prime is 38455663684643. The reversal of 38455663684589 is 98548636655483.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 36917897520100 + 1537766164489 = 6076010^2 + 1240067^2 .

It is a cyclic number.

It is not a de Polignac number, because 38455663684589 - 2¹² = 38455663680493 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38455665684589) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19227831842294 + 19227831842295.

It is an arithmetic number, because the mean of its divisors is an integer number (19227831842295).

Almost surely, 2^{38455663684589} is an apocalyptic number.

It is an amenable number.

38455663684589 is a deficient number, since it is larger than the sum of its proper divisors (1).

38455663684589 is an equidigital number, since it uses as much as digits as its factorization.

38455663684589 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17915904000, while the sum is 80.

The spelling of 38455663684589 in words is "thirty-eight trillion, four hundred fifty-five billion, six hundred sixty-three million, six hundred eighty-four thousand, five hundred eighty-nine".