28554081558 has 32 divisors (see below), whose sum is σ = 60674110560. Its totient is φ = 8941443840.

The previous prime is 28554081547. The next prime is 28554081583. The reversal of 28554081558 is 85518045582.

It is a happy number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 28554081558.

It is a congruent number.

It is an unprimeable number.

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 in 15 ways as a sum of consecutive naturals, for example, 2211183 + ... + 2224058.

It is an arithmetic number, because the mean of its divisors is an integer number (1896065955).

Almost surely, 2^28554081558 is an apocalyptic number.

28554081558 is an abundant number, since it is smaller than the sum of its proper divisors (32120029002).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28554081558 is a wasteful number, since it uses less digits than its factorization.

28554081558 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4435312.

The product of its (nonzero) digits is 2560000, while the sum is 51.

The spelling of 28554081558 in words is "twenty-eight billion, five hundred fifty-four million, eighty-one thousand, five hundred fifty-eight".