28615454099 has 2 divisors, whose sum is σ = 28615454100. Its totient is φ = 28615454098.

The previous prime is 28615454093. The next prime is 28615454149. The reversal of 28615454099 is 99045451682.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28615454099 - 2⁴ = 28615454083 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28615454099.

It is not a weakly prime, because it can be changed into another prime (28615454093) 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, 14307727049 + 14307727050.

It is an arithmetic number, because the mean of its divisors is an integer number (14307727050).

Almost surely, 2^28615454099 is an apocalyptic number.

28615454099 is a deficient number, since it is larger than the sum of its proper divisors (1).

28615454099 is an equidigital number, since it uses as much as digits as its factorization.

28615454099 is an odious number, because the sum of its binary digits is odd.

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

The spelling of 28615454099 in words is "twenty-eight billion, six hundred fifteen million, four hundred fifty-four thousand, ninety-nine".