28061115007 has 2 divisors, whose sum is σ = 28061115008. Its totient is φ = 28061115006.

The previous prime is 28061114993. The next prime is 28061115011. The reversal of 28061115007 is 70051116082.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28061115007 is a prime.

It is a super-2 number, since 2×28061115007² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 28061115007.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28061115307) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14030557503 + 14030557504.

It is an arithmetic number, because the mean of its divisors is an integer number (14030557504).

Almost surely, 2^28061115007 is an apocalyptic number.

28061115007 is a deficient number, since it is larger than the sum of its proper divisors (1).

28061115007 is an equidigital number, since it uses as much as digits as its factorization.

28061115007 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3360, while the sum is 31.

The spelling of 28061115007 in words is "twenty-eight billion, sixty-one million, one hundred fifteen thousand, seven".