38638405736969 has 2 divisors, whose sum is σ = 38638405736970. Its totient is φ = 38638405736968.

The previous prime is 38638405736963. The next prime is 38638405736977. The reversal of 38638405736969 is 96963750483683.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21048459379600 + 17589946357369 = 4587860^2 + 4194037^2 .

It is a cyclic number.

It is not a de Polignac number, because 38638405736969 - 2¹⁶ = 38638405671433 is a prime.

It is a super-2 number, since 2×38638405736969² (a number of 28 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 38638405736969.

It is not a weakly prime, because it can be changed into another prime (38638405736963) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19319202868484 + 19319202868485.

It is an arithmetic number, because the mean of its divisors is an integer number (19319202868485).

Almost surely, 2^{38638405736969} is an apocalyptic number.

It is an amenable number.

38638405736969 is a deficient number, since it is larger than the sum of its proper divisors (1).

38638405736969 is an equidigital number, since it uses as much as digits as its factorization.

38638405736969 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4232632320, while the sum is 77.

The spelling of 38638405736969 in words is "thirty-eight trillion, six hundred thirty-eight billion, four hundred five million, seven hundred thirty-six thousand, nine hundred sixty-nine".