7138371687973 has 2 divisors, whose sum is σ = 7138371687974. Its totient is φ = 7138371687972.

The previous prime is 7138371687949. The next prime is 7138371687991. The reversal of 7138371687973 is 3797861738317.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5245922998404 + 1892448689569 = 2290398^2 + 1375663^2 .

It is a cyclic number.

It is not a de Polignac number, because 7138371687973 - 2²⁵ = 7138338133541 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7138371687173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3569185843986 + 3569185843987.

It is an arithmetic number, because the mean of its divisors is an integer number (3569185843987).

Almost surely, 2^{7138371687973} is an apocalyptic number.

It is an amenable number.

7138371687973 is a deficient number, since it is larger than the sum of its proper divisors (1).

7138371687973 is an equidigital number, since it uses as much as digits as its factorization.

7138371687973 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 224042112, while the sum is 70.

The spelling of 7138371687973 in words is "seven trillion, one hundred thirty-eight billion, three hundred seventy-one million, six hundred eighty-seven thousand, nine hundred seventy-three".