38425665517 has 2 divisors, whose sum is σ = 38425665518. Its totient is φ = 38425665516.

The previous prime is 38425665511. The next prime is 38425665533. The reversal of 38425665517 is 71556652483.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 37923278121 + 502387396 = 194739^2 + 22414^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-38425665517 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38425665511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19212832758 + 19212832759.

It is an arithmetic number, because the mean of its divisors is an integer number (19212832759).

Almost surely, 2^38425665517 is an apocalyptic number.

It is an amenable number.

38425665517 is a deficient number, since it is larger than the sum of its proper divisors (1).

38425665517 is an equidigital number, since it uses as much as digits as its factorization.

38425665517 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6048000, while the sum is 52.

The spelling of 38425665517 in words is "thirty-eight billion, four hundred twenty-five million, six hundred sixty-five thousand, five hundred seventeen".