38387525785669 has 2 divisors, whose sum is σ = 38387525785670. Its totient is φ = 38387525785668.

The previous prime is 38387525785621. The next prime is 38387525785699. The reversal of 38387525785669 is 96658752578383.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19565273260225 + 18822252525444 = 4423265^2 + 4338462^2 .

It is a cyclic number.

It is not a de Polignac number, because 38387525785669 - 2¹³ = 38387525777477 is a prime.

It is a super-2 number, since 2×38387525785669² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 38387525785592 and 38387525785601.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38387525785699) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19193762892834 + 19193762892835.

It is an arithmetic number, because the mean of its divisors is an integer number (19193762892835).

Almost surely, 2^{38387525785669} is an apocalyptic number.

It is an amenable number.

38387525785669 is a deficient number, since it is larger than the sum of its proper divisors (1).

38387525785669 is an equidigital number, since it uses as much as digits as its factorization.

38387525785669 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18289152000, while the sum is 82.

The spelling of 38387525785669 in words is "thirty-eight trillion, three hundred eighty-seven billion, five hundred twenty-five million, seven hundred eighty-five thousand, six hundred sixty-nine".