7641221411 has 2 divisors, whose sum is σ = 7641221412. Its totient is φ = 7641221410.

The previous prime is 7641221407. The next prime is 7641221503. The reversal of 7641221411 is 1141221467.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (1141221467) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7641221411 - 2² = 7641221407 is a prime.

It is not a weakly prime, because it can be changed into another prime (7641221011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3820610705 + 3820610706.

It is an arithmetic number, because the mean of its divisors is an integer number (3820610706).

Almost surely, 2^7641221411 is an apocalyptic number.

7641221411 is a deficient number, since it is larger than the sum of its proper divisors (1).

7641221411 is an equidigital number, since it uses as much as digits as its factorization.

7641221411 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2688, while the sum is 29.

The square root of 7641221411 is about 87414.0801644678. The cubic root of 7641221411 is about 1969.6433524275.

Adding to 7641221411 its reverse (1141221467), we get a palindrome (8782442878).

The spelling of 7641221411 in words is "seven billion, six hundred forty-one million, two hundred twenty-one thousand, four hundred eleven".