28556662535020 has 48 divisors (see below), whose sum is σ = 62516380743936. Its totient is φ = 10944744480000.

The previous prime is 28556662535017. The next prime is 28556662535047. The reversal of 28556662535020 is 2053526665582.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 227952891 + ... + 228078130.

It is an arithmetic number, because the mean of its divisors is an integer number (1302424598832).

Almost surely, 2^{28556662535020} is an apocalyptic number.

28556662535020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28556662535020 is an abundant number, since it is smaller than the sum of its proper divisors (33959718208916).

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

28556662535020 is a wasteful number, since it uses less digits than its factorization.

28556662535020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 456031162 (or 456031160 counting only the distinct ones).

The product of its (nonzero) digits is 25920000, while the sum is 55.

It can be divided in two parts, 2855666 and 2535020, that added together give a triangular number (5390686 = T₃₂₈₃).

The spelling of 28556662535020 in words is "twenty-eight trillion, five hundred fifty-six billion, six hundred sixty-two million, five hundred thirty-five thousand, twenty".