7981123753 has 2 divisors, whose sum is σ = 7981123754. Its totient is φ = 7981123752.

The previous prime is 7981123723. The next prime is 7981123769. The reversal of 7981123753 is 3573211897.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7125385744 + 855738009 = 84412^2 + 29253^2 .

It is a cyclic number.

It is not a de Polignac number, because 7981123753 - 2¹⁷ = 7980992681 is a prime.

It is not a weakly prime, because it can be changed into another prime (7981123723) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3990561876 + 3990561877.

It is an arithmetic number, because the mean of its divisors is an integer number (3990561877).

Almost surely, 2^7981123753 is an apocalyptic number.

It is an amenable number.

7981123753 is a deficient number, since it is larger than the sum of its proper divisors (1).

7981123753 is an equidigital number, since it uses as much as digits as its factorization.

7981123753 is an evil number, because the sum of its binary digits is even.

The product of its digits is 317520, while the sum is 46.

The square root of 7981123753 is about 89337.1353525509. The cubic root of 7981123753 is about 1998.4257405955.

The spelling of 7981123753 in words is "seven billion, nine hundred eighty-one million, one hundred twenty-three thousand, seven hundred fifty-three".