28922117633 has 2 divisors, whose sum is σ = 28922117634. Its totient is φ = 28922117632.

The previous prime is 28922117591. The next prime is 28922117723. The reversal of 28922117633 is 33671122982.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28418204929 + 503912704 = 168577^2 + 22448^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28922117633 is a prime.

It is not a weakly prime, because it can be changed into another prime (28922117233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14461058816 + 14461058817.

It is an arithmetic number, because the mean of its divisors is an integer number (14461058817).

Almost surely, 2^28922117633 is an apocalyptic number.

It is an amenable number.

28922117633 is a deficient number, since it is larger than the sum of its proper divisors (1).

28922117633 is an equidigital number, since it uses as much as digits as its factorization.

28922117633 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 217728, while the sum is 44.

The spelling of 28922117633 in words is "twenty-eight billion, nine hundred twenty-two million, one hundred seventeen thousand, six hundred thirty-three".