28866550319 has 2 divisors, whose sum is σ = 28866550320. Its totient is φ = 28866550318.

The previous prime is 28866550277. The next prime is 28866550327. The reversal of 28866550319 is 91305566882.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28866550319 is a prime.

It is a super-2 number, since 2×28866550319² (a number of 22 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28866556319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14433275159 + 14433275160.

It is an arithmetic number, because the mean of its divisors is an integer number (14433275160).

Almost surely, 2^28866550319 is an apocalyptic number.

28866550319 is a deficient number, since it is larger than the sum of its proper divisors (1).

28866550319 is an equidigital number, since it uses as much as digits as its factorization.

28866550319 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3110400, while the sum is 53.

The spelling of 28866550319 in words is "twenty-eight billion, eight hundred sixty-six million, five hundred fifty thousand, three hundred nineteen".