28402699973 has 2 divisors, whose sum is σ = 28402699974. Its totient is φ = 28402699972.

The previous prime is 28402699967. The next prime is 28402700047. The reversal of 28402699973 is 37999620482.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28401349729 + 1350244 = 168527^2 + 1162^2 .

It is a cyclic number.

It is not a de Polignac number, because 28402699973 - 2⁶ = 28402699909 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28402699933) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14201349986 + 14201349987.

It is an arithmetic number, because the mean of its divisors is an integer number (14201349987).

Almost surely, 2^28402699973 is an apocalyptic number.

It is an amenable number.

28402699973 is a deficient number, since it is larger than the sum of its proper divisors (1).

28402699973 is an equidigital number, since it uses as much as digits as its factorization.

28402699973 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11757312, while the sum is 59.

The spelling of 28402699973 in words is "twenty-eight billion, four hundred two million, six hundred ninety-nine thousand, nine hundred seventy-three".