28554132017655 has 24 divisors (see below), whose sum is σ = 49494087180720. Its totient is φ = 15228790917120.

The previous prime is 28554132017599. The next prime is 28554132017657. The reversal of 28554132017655 is 55671023145582.

28554132017655 is a `hidden beast` number, since 2 + 8 + 5 + 5 + 413 + 2 + 0 + 176 + 55 = 666.

It is not a de Polignac number, because 28554132017655 - 2²⁵ = 28554098463223 is a prime.

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 23 ways as a sum of consecutive naturals, for example, 7633236 + ... + 10741254.

It is an arithmetic number, because the mean of its divisors is an integer number (2062253632530).

Almost surely, 2^{28554132017655} is an apocalyptic number.

28554132017655 is a deficient number, since it is larger than the sum of its proper divisors (20939955163065).

28554132017655 is a wasteful number, since it uses less digits than its factorization.

28554132017655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3312191 (or 3312188 counting only the distinct ones).

The product of its (nonzero) digits is 10080000, while the sum is 54.

The spelling of 28554132017655 in words is "twenty-eight trillion, five hundred fifty-four billion, one hundred thirty-two million, seventeen thousand, six hundred fifty-five".