28477645455 has 128 divisors (see below), whose sum is σ = 58208716800. Its totient is φ = 11573673984.

The previous prime is 28477645453. The next prime is 28477645459. The reversal of 28477645455 is 55454677482.

It is not a de Polignac number, because 28477645455 - 2¹ = 28477645453 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a junction number, because it is equal to n+sod(n) for n = 28477645395 and 28477645404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28477645451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 13870209 + ... + 13872261.

It is an arithmetic number, because the mean of its divisors is an integer number (454755600).

Almost surely, 2^28477645455 is an apocalyptic number.

28477645455 is an abundant number, since it is smaller than the sum of its proper divisors (29731071345).

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

28477645455 is a wasteful number, since it uses less digits than its factorization.

28477645455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2513.

The product of its digits is 37632000, while the sum is 57.

The spelling of 28477645455 in words is "twenty-eight billion, four hundred seventy-seven million, six hundred forty-five thousand, four hundred fifty-five".