7921451353 has 2 divisors, whose sum is σ = 7921451354. Its totient is φ = 7921451352.

The previous prime is 7921451341. The next prime is 7921451383. The reversal of 7921451353 is 3531541297.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7418032384 + 503418969 = 86128^2 + 22437^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7921451353 is a prime.

It is not a weakly prime, because it can be changed into another prime (7921451303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3960725676 + 3960725677.

It is an arithmetic number, because the mean of its divisors is an integer number (3960725677).

Almost surely, 2^7921451353 is an apocalyptic number.

It is an amenable number.

7921451353 is a deficient number, since it is larger than the sum of its proper divisors (1).

7921451353 is an equidigital number, since it uses as much as digits as its factorization.

7921451353 is an evil number, because the sum of its binary digits is even.

The product of its digits is 113400, while the sum is 40.

The square root of 7921451353 is about 89002.5356548902. The cubic root of 7921451353 is about 1993.4327385585.

The spelling of 7921451353 in words is "seven billion, nine hundred twenty-one million, four hundred fifty-one thousand, three hundred fifty-three".