613822132921 has 2 divisors, whose sum is σ = 613822132922. Its totient is φ = 613822132920.

The previous prime is 613822132897. The next prime is 613822132927. The reversal of 613822132921 is 129231228316.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 534953274025 + 78868858896 = 731405^2 + 280836^2 .

It is a cyclic number.

It is not a de Polignac number, because 613822132921 - 2⁹ = 613822132409 is a prime.

It is a super-2 number, since 2×613822132921² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (613822132927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 306911066460 + 306911066461.

It is an arithmetic number, because the mean of its divisors is an integer number (306911066461).

Almost surely, 2^613822132921 is an apocalyptic number.

It is an amenable number.

613822132921 is a deficient number, since it is larger than the sum of its proper divisors (1).

613822132921 is an equidigital number, since it uses as much as digits as its factorization.

613822132921 is an evil number, because the sum of its binary digits is even.

The product of its digits is 62208, while the sum is 40.

The spelling of 613822132921 in words is "six hundred thirteen billion, eight hundred twenty-two million, one hundred thirty-two thousand, nine hundred twenty-one".