38749725909361 has 2 divisors, whose sum is σ = 38749725909362. Its totient is φ = 38749725909360.

The previous prime is 38749725909343. The next prime is 38749725909421. The reversal of 38749725909361 is 16390952794783.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28425489381136 + 10324236528225 = 5331556^2 + 3213135^2 .

It is a cyclic number.

It is not a de Polignac number, because 38749725909361 - 2⁵ = 38749725909329 is a prime.

It is not a weakly prime, because it can be changed into another prime (38749725909331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19374862954680 + 19374862954681.

It is an arithmetic number, because the mean of its divisors is an integer number (19374862954681).

It is a 1-persistent number, because it is pandigital, but 2⋅38749725909361 = 77499451818722 is not.

Almost surely, 2^{38749725909361} is an apocalyptic number.

It is an amenable number.

38749725909361 is a deficient number, since it is larger than the sum of its proper divisors (1).

38749725909361 is an equidigital number, since it uses as much as digits as its factorization.

38749725909361 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 617258880, while the sum is 73.

The spelling of 38749725909361 in words is "thirty-eight trillion, seven hundred forty-nine billion, seven hundred twenty-five million, nine hundred nine thousand, three hundred sixty-one".