28115054057 has 2 divisors, whose sum is σ = 28115054058. Its totient is φ = 28115054056.

The previous prime is 28115054047. The next prime is 28115054063. The reversal of 28115054057 is 75045051182.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 27601170496 + 513883561 = 166136^2 + 22669^2 .

It is a cyclic number.

It is not a de Polignac number, because 28115054057 - 2⁸ = 28115053801 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28115054057.

It is not a weakly prime, because it can be changed into another prime (28115054017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14057527028 + 14057527029.

It is an arithmetic number, because the mean of its divisors is an integer number (14057527029).

Almost surely, 2^28115054057 is an apocalyptic number.

It is an amenable number.

28115054057 is a deficient number, since it is larger than the sum of its proper divisors (1).

28115054057 is an equidigital number, since it uses as much as digits as its factorization.

28115054057 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 56000, while the sum is 38.

The spelling of 28115054057 in words is "twenty-eight billion, one hundred fifteen million, fifty-four thousand, fifty-seven".