28023905537 has 2 divisors, whose sum is σ = 28023905538. Its totient is φ = 28023905536.

The previous prime is 28023905473. The next prime is 28023905557. The reversal of 28023905537 is 73550932082.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21882989041 + 6140916496 = 147929^2 + 78364^2 .

It is a cyclic number.

It is not a de Polignac number, because 28023905537 - 2⁶ = 28023905473 is a prime.

It is not a weakly prime, because it can be changed into another prime (28023905557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14011952768 + 14011952769.

It is an arithmetic number, because the mean of its divisors is an integer number (14011952769).

Almost surely, 2^28023905537 is an apocalyptic number.

It is an amenable number.

28023905537 is a deficient number, since it is larger than the sum of its proper divisors (1).

28023905537 is an equidigital number, since it uses as much as digits as its factorization.

28023905537 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 453600, while the sum is 44.

The spelling of 28023905537 in words is "twenty-eight billion, twenty-three million, nine hundred five thousand, five hundred thirty-seven".