39139081273 has 2 divisors, whose sum is σ = 39139081274. Its totient is φ = 39139081272.

The previous prime is 39139081271. The next prime is 39139081277. The reversal of 39139081273 is 37218093193.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 34986954304 + 4152126969 = 187048^2 + 64437^2 .

It is a cyclic number.

It is not a de Polignac number, because 39139081273 - 2¹ = 39139081271 is a prime.

Together with 39139081271, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (39139081271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19569540636 + 19569540637.

It is an arithmetic number, because the mean of its divisors is an integer number (19569540637).

Almost surely, 2^39139081273 is an apocalyptic number.

It is an amenable number.

39139081273 is a deficient number, since it is larger than the sum of its proper divisors (1).

39139081273 is an equidigital number, since it uses as much as digits as its factorization.

39139081273 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 244944, while the sum is 46.

The spelling of 39139081273 in words is "thirty-nine billion, one hundred thirty-nine million, eighty-one thousand, two hundred seventy-three".