7144621361 has 2 divisors, whose sum is σ = 7144621362. Its totient is φ = 7144621360.

The previous prime is 7144621339. The next prime is 7144621369. The reversal of 7144621361 is 1631264417.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4476279025 + 2668342336 = 66905^2 + 51656^2 .

It is a cyclic number.

It is not a de Polignac number, because 7144621361 - 2¹⁸ = 7144359217 is a prime.

It is a super-2 number, since 2×7144621361² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (7144621369) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3572310680 + 3572310681.

It is an arithmetic number, because the mean of its divisors is an integer number (3572310681).

Almost surely, 2^7144621361 is an apocalyptic number.

It is an amenable number.

7144621361 is a deficient number, since it is larger than the sum of its proper divisors (1).

7144621361 is an equidigital number, since it uses as much as digits as its factorization.

7144621361 is an evil number, because the sum of its binary digits is even.

The product of its digits is 24192, while the sum is 35.

The square root of 7144621361 is about 84525.8620837433. The cubic root of 7144621361 is about 1926.0153286378.

Adding to 7144621361 its reverse (1631264417), we get a palindrome (8775885778).

The spelling of 7144621361 in words is "seven billion, one hundred forty-four million, six hundred twenty-one thousand, three hundred sixty-one".