7989728801 has 2 divisors, whose sum is σ = 7989728802. Its totient is φ = 7989728800.

The previous prime is 7989728771. The next prime is 7989728843. The reversal of 7989728801 is 1088279897.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7194432400 + 795296401 = 84820^2 + 28201^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7989728801 is a prime.

It is not a weakly prime, because it can be changed into another prime (7989728861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3994864400 + 3994864401.

It is an arithmetic number, because the mean of its divisors is an integer number (3994864401).

Almost surely, 2^7989728801 is an apocalyptic number.

It is an amenable number.

7989728801 is a deficient number, since it is larger than the sum of its proper divisors (1).

7989728801 is an equidigital number, since it uses as much as digits as its factorization.

7989728801 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4064256, while the sum is 59.

The square root of 7989728801 is about 89385.2829105552. The cubic root of 7989728801 is about 1999.1437001776.

The spelling of 7989728801 in words is "seven billion, nine hundred eighty-nine million, seven hundred twenty-eight thousand, eight hundred one".