39681775272901 has 2 divisors, whose sum is σ = 39681775272902. Its totient is φ = 39681775272900.

The previous prime is 39681775272883. The next prime is 39681775272967. The reversal of 39681775272901 is 10927257718693.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28720703088900 + 10961072184001 = 5359170^2 + 3310751^2 .

It is a cyclic number.

It is not a de Polignac number, because 39681775272901 - 2⁵ = 39681775272869 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (39681175272901) 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, 19840887636450 + 19840887636451.

It is an arithmetic number, because the mean of its divisors is an integer number (19840887636451).

Almost surely, 2^{39681775272901} is an apocalyptic number.

It is an amenable number.

39681775272901 is a deficient number, since it is larger than the sum of its proper divisors (1).

39681775272901 is an equidigital number, since it uses as much as digits as its factorization.

39681775272901 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 80015040, while the sum is 67.

The spelling of 39681775272901 in words is "thirty-nine trillion, six hundred eighty-one billion, seven hundred seventy-five million, two hundred seventy-two thousand, nine hundred one".