7988321051 has 2 divisors, whose sum is σ = 7988321052. Its totient is φ = 7988321050.

The previous prime is 7988321027. The next prime is 7988321093. The reversal of 7988321051 is 1501238897.

It is a weak prime.

It is an emirp because it is prime and its reverse (1501238897) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7988321051 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 7988320993 and 7988321011.

It is not a weakly prime, because it can be changed into another prime (7988321021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3994160525 + 3994160526.

It is an arithmetic number, because the mean of its divisors is an integer number (3994160526).

Almost surely, 2^7988321051 is an apocalyptic number.

7988321051 is a deficient number, since it is larger than the sum of its proper divisors (1).

7988321051 is an equidigital number, since it uses as much as digits as its factorization.

7988321051 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 120960, while the sum is 44.

The square root of 7988321051 is about 89377.4079451849. The cubic root of 7988321051 is about 1999.0262802619.

The spelling of 7988321051 in words is "seven billion, nine hundred eighty-eight million, three hundred twenty-one thousand, fifty-one".