28290138323 has 2 divisors, whose sum is σ = 28290138324. Its totient is φ = 28290138322.

The previous prime is 28290138307. The next prime is 28290138337. The reversal of 28290138323 is 32383109282.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 28290138323 - 2⁴ = 28290138307 is a prime.

It is not a weakly prime, because it can be changed into another prime (28290138623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14145069161 + 14145069162.

It is an arithmetic number, because the mean of its divisors is an integer number (14145069162).

Almost surely, 2^28290138323 is an apocalyptic number.

28290138323 is a deficient number, since it is larger than the sum of its proper divisors (1).

28290138323 is an equidigital number, since it uses as much as digits as its factorization.

28290138323 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 124416, while the sum is 41.

The spelling of 28290138323 in words is "twenty-eight billion, two hundred ninety million, one hundred thirty-eight thousand, three hundred twenty-three".