7730628204881 has 2 divisors, whose sum is σ = 7730628204882. Its totient is φ = 7730628204880.

The previous prime is 7730628204781. The next prime is 7730628204883. The reversal of 7730628204881 is 1884028260377.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6602412474256 + 1128215730625 = 2569516^2 + 1062175^2 .

It is an emirp because it is prime and its reverse (1884028260377) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7730628204881 is a prime.

It is a super-2 number, since 2×7730628204881² (a number of 27 digits) contains 22 as substring.

Together with 7730628204883, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (7730628204883) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3865314102440 + 3865314102441.

It is an arithmetic number, because the mean of its divisors is an integer number (3865314102441).

Almost surely, 2^{7730628204881} is an apocalyptic number.

It is an amenable number.

7730628204881 is a deficient number, since it is larger than the sum of its proper divisors (1).

7730628204881 is an equidigital number, since it uses as much as digits as its factorization.

7730628204881 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7225344, while the sum is 56.

The spelling of 7730628204881 in words is "seven trillion, seven hundred thirty billion, six hundred twenty-eight million, two hundred four thousand, eight hundred eighty-one".