28554132017656 has 64 divisors (see below), whose sum is σ = 64814178110400. Its totient is φ = 11512745613312.

The previous prime is 28554132017599. The next prime is 28554132017657. The reversal of 28554132017656 is 65671023145582.

It is a junction number, because it is equal to n+sod(n) for n = 28554132017597 and 28554132017606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28554132017657) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4118851 + ... + 8606578.

It is an arithmetic number, because the mean of its divisors is an integer number (1012721532975).

Almost surely, 2^{28554132017656} is an apocalyptic number.

It is an amenable number.

28554132017656 is an abundant number, since it is smaller than the sum of its proper divisors (36260046092744).

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

28554132017656 is a wasteful number, since it uses less digits than its factorization.

28554132017656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12727816 (or 12727812 counting only the distinct ones).

The product of its (nonzero) digits is 12096000, while the sum is 55.

The spelling of 28554132017656 in words is "twenty-eight trillion, five hundred fifty-four billion, one hundred thirty-two million, seventeen thousand, six hundred fifty-six".