7821324053 has 2 divisors, whose sum is σ = 7821324054. Its totient is φ = 7821324052.

The previous prime is 7821323999. The next prime is 7821324061. The reversal of 7821324053 is 3504231287.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7133153764 + 688170289 = 84458^2 + 26233^2 .

It is a cyclic number.

It is not a de Polignac number, because 7821324053 - 2¹⁸ = 7821061909 is a prime.

It is a super-2 number, since 2×7821324053² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7821324073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3910662026 + 3910662027.

It is an arithmetic number, because the mean of its divisors is an integer number (3910662027).

Almost surely, 2^7821324053 is an apocalyptic number.

It is an amenable number.

7821324053 is a deficient number, since it is larger than the sum of its proper divisors (1).

7821324053 is an equidigital number, since it uses as much as digits as its factorization.

7821324053 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40320, while the sum is 35.

The square root of 7821324053 is about 88438.2499431100. The cubic root of 7821324053 is about 1984.9980904625.

The spelling of 7821324053 in words is "seven billion, eight hundred twenty-one million, three hundred twenty-four thousand, fifty-three".