28072027342993 has 2 divisors, whose sum is σ = 28072027342994. Its totient is φ = 28072027342992.

The previous prime is 28072027342973. The next prime is 28072027343029. The reversal of 28072027342993 is 39924372027082.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22012912171264 + 6059115171729 = 4691792^2 + 2461527^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28072027342993 is a prime.

It is not a weakly prime, because it can be changed into another prime (28072027342963) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14036013671496 + 14036013671497.

It is an arithmetic number, because the mean of its divisors is an integer number (14036013671497).

Almost surely, 2^{28072027342993} is an apocalyptic number.

It is an amenable number.

28072027342993 is a deficient number, since it is larger than the sum of its proper divisors (1).

28072027342993 is an equidigital number, since it uses as much as digits as its factorization.

28072027342993 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18289152, while the sum is 58.

The spelling of 28072027342993 in words is "twenty-eight trillion, seventy-two billion, twenty-seven million, three hundred forty-two thousand, nine hundred ninety-three".