28388502528555 has 32 divisors (see below), whose sum is σ = 50602317514560. Its totient is φ = 13493951331840.

The previous prime is 28388502528499. The next prime is 28388502528557. The reversal of 28388502528555 is 55582520588382.

It is not a de Polignac number, because 28388502528555 - 2³⁵ = 28354142790187 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28388502528557) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2510029936 + ... + 2510041245.

It is an arithmetic number, because the mean of its divisors is an integer number (1581322422330).

Almost surely, 2^{28388502528555} is an apocalyptic number.

28388502528555 is a deficient number, since it is larger than the sum of its proper divisors (22213814986005).

28388502528555 is a wasteful number, since it uses less digits than its factorization.

28388502528555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5020071231.

The product of its (nonzero) digits is 307200000, while the sum is 66.

The spelling of 28388502528555 in words is "twenty-eight trillion, three hundred eighty-eight billion, five hundred two million, five hundred twenty-eight thousand, five hundred fifty-five".