7028315081 has 2 divisors, whose sum is σ = 7028315082. Its totient is φ = 7028315080.

The previous prime is 7028315069. The next prime is 7028315101. The reversal of 7028315081 is 1805138207.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6737783056 + 290532025 = 82084^2 + 17045^2 .

It is an emirp because it is prime and its reverse (1805138207) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7028315081 - 2⁶ = 7028315017 is a prime.

It is a super-2 number, since 2×7028315081² = 98794425755624073122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (7028335081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3514157540 + 3514157541.

It is an arithmetic number, because the mean of its divisors is an integer number (3514157541).

Almost surely, 2^7028315081 is an apocalyptic number.

It is an amenable number.

7028315081 is a deficient number, since it is larger than the sum of its proper divisors (1).

7028315081 is an equidigital number, since it uses as much as digits as its factorization.

7028315081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13440, while the sum is 35.

The square root of 7028315081 is about 83835.0468539262. The cubic root of 7028315081 is about 1915.5069890891.

The spelling of 7028315081 in words is "seven billion, twenty-eight million, three hundred fifteen thousand, eighty-one".