28223066437 has 2 divisors, whose sum is σ = 28223066438. Its totient is φ = 28223066436.

The previous prime is 28223066419. The next prime is 28223066453. The reversal of 28223066437 is 73466032282.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 28196790561 + 26275876 = 167919^2 + 5126^2 .

It is a cyclic number.

It is not a de Polignac number, because 28223066437 - 2⁷ = 28223066309 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28223066393 and 28223066402.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28223066467) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14111533218 + 14111533219.

It is an arithmetic number, because the mean of its divisors is an integer number (14111533219).

Almost surely, 2^28223066437 is an apocalyptic number.

It is an amenable number.

28223066437 is a deficient number, since it is larger than the sum of its proper divisors (1).

28223066437 is an equidigital number, since it uses as much as digits as its factorization.

28223066437 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 580608, while the sum is 43.

The spelling of 28223066437 in words is "twenty-eight billion, two hundred twenty-three million, sixty-six thousand, four hundred thirty-seven".