28451007337309 has 2 divisors, whose sum is σ = 28451007337310. Its totient is φ = 28451007337308.

The previous prime is 28451007337297. The next prime is 28451007337343. The reversal of 28451007337309 is 90373370015482.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22767956610084 + 5683050727225 = 4771578^2 + 2383915^2 .

It is a cyclic number.

It is not a de Polignac number, because 28451007337309 - 2⁹ = 28451007336797 is a prime.

It is a super-2 number, since 2×28451007337309² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28451007332309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14225503668654 + 14225503668655.

It is an arithmetic number, because the mean of its divisors is an integer number (14225503668655).

Almost surely, 2^{28451007337309} is an apocalyptic number.

It is an amenable number.

28451007337309 is a deficient number, since it is larger than the sum of its proper divisors (1).

28451007337309 is an equidigital number, since it uses as much as digits as its factorization.

28451007337309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3810240, while the sum is 52.

The spelling of 28451007337309 in words is "twenty-eight trillion, four hundred fifty-one billion, seven million, three hundred thirty-seven thousand, three hundred nine".