28115056001 has 2 divisors, whose sum is σ = 28115056002. Its totient is φ = 28115056000.

The previous prime is 28115055989. The next prime is 28115056037. The reversal of 28115056001 is 10065051182.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18329098225 + 9785957776 = 135385^2 + 98924^2 .

It is a cyclic number.

It is not a de Polignac number, because 28115056001 - 2³⁰ = 27041314177 is a prime.

It is a super-2 number, since 2×28115056001² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (28115056051) 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, 14057528000 + 14057528001.

It is an arithmetic number, because the mean of its divisors is an integer number (14057528001).

Almost surely, 2^28115056001 is an apocalyptic number.

It is an amenable number.

28115056001 is a deficient number, since it is larger than the sum of its proper divisors (1).

28115056001 is an equidigital number, since it uses as much as digits as its factorization.

28115056001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2400, while the sum is 29.

The spelling of 28115056001 in words is "twenty-eight billion, one hundred fifteen million, fifty-six thousand, one".