38444663309231 has 2 divisors, whose sum is σ = 38444663309232. Its totient is φ = 38444663309230.

The previous prime is 38444663309209. The next prime is 38444663309243. The reversal of 38444663309231 is 13290336644483.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 38444663309231 - 2⁶ = 38444663309167 is a prime.

It is a super-2 number, since 2×38444663309231² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38444663309831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19222331654615 + 19222331654616.

It is an arithmetic number, because the mean of its divisors is an integer number (19222331654616).

Almost surely, 2^{38444663309231} is an apocalyptic number.

38444663309231 is a deficient number, since it is larger than the sum of its proper divisors (1).

38444663309231 is an equidigital number, since it uses as much as digits as its factorization.

38444663309231 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 26873856, while the sum is 56.

The spelling of 38444663309231 in words is "thirty-eight trillion, four hundred forty-four billion, six hundred sixty-three million, three hundred nine thousand, two hundred thirty-one".