7887239746973 has 2 divisors, whose sum is σ = 7887239746974. Its totient is φ = 7887239746972.

The previous prime is 7887239746909. The next prime is 7887239747039. The reversal of 7887239746973 is 3796479327887.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5526462810649 + 2360776936324 = 2350843^2 + 1536482^2 .

It is a cyclic number.

It is not a de Polignac number, because 7887239746973 - 2⁶ = 7887239746909 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7887239796973) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3943619873486 + 3943619873487.

It is an arithmetic number, because the mean of its divisors is an integer number (3943619873487).

Almost surely, 2^{7887239746973} is an apocalyptic number.

It is an amenable number.

7887239746973 is a deficient number, since it is larger than the sum of its proper divisors (1).

7887239746973 is an equidigital number, since it uses as much as digits as its factorization.

7887239746973 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5377010688, while the sum is 80.

The spelling of 7887239746973 in words is "seven trillion, eight hundred eighty-seven billion, two hundred thirty-nine million, seven hundred forty-six thousand, nine hundred seventy-three".