7128820763 has 2 divisors, whose sum is σ = 7128820764. Its totient is φ = 7128820762.

The previous prime is 7128820733. The next prime is 7128820771. The reversal of 7128820763 is 3670288217.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7128820763 is a prime.

It is not a weakly prime, because it can be changed into another prime (7128820733) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3564410381 + 3564410382.

It is an arithmetic number, because the mean of its divisors is an integer number (3564410382).

Almost surely, 2^7128820763 is an apocalyptic number.

7128820763 is a deficient number, since it is larger than the sum of its proper divisors (1).

7128820763 is an equidigital number, since it uses as much as digits as its factorization.

7128820763 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 225792, while the sum is 44.

The square root of 7128820763 is about 84432.3442941152. The cubic root of 7128820763 is about 1924.5944623202.

The spelling of 7128820763 in words is "seven billion, one hundred twenty-eight million, eight hundred twenty thousand, seven hundred sixty-three".