28499320373 has 2 divisors, whose sum is σ = 28499320374. Its totient is φ = 28499320372.

The previous prime is 28499320357. The next prime is 28499320379. The reversal of 28499320373 is 37302399482.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21134762884 + 7364557489 = 145378^2 + 85817^2 .

It is a cyclic number.

It is not a de Polignac number, because 28499320373 - 2⁴ = 28499320357 is a prime.

It is a super-2 number, since 2×28499320373² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28499320379) 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, 14249660186 + 14249660187.

It is an arithmetic number, because the mean of its divisors is an integer number (14249660187).

Almost surely, 2^28499320373 is an apocalyptic number.

It is an amenable number.

28499320373 is a deficient number, since it is larger than the sum of its proper divisors (1).

28499320373 is an equidigital number, since it uses as much as digits as its factorization.

28499320373 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1959552, while the sum is 50.

The spelling of 28499320373 in words is "twenty-eight billion, four hundred ninety-nine million, three hundred twenty thousand, three hundred seventy-three".