55284645478 has 8 divisors (see below), whose sum is σ = 83926088568. Its totient is φ = 27309282624.

The previous prime is 55284645469. The next prime is 55284645499. The reversal of 55284645478 is 87454648255.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 166519851 + ... + 166520182.

It is an arithmetic number, because the mean of its divisors is an integer number (10490761071).

Almost surely, 2^55284645478 is an apocalyptic number.

55284645478 is a deficient number, since it is larger than the sum of its proper divisors (28641443090).

55284645478 is a wasteful number, since it uses less digits than its factorization.

55284645478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 333040118.

The product of its digits is 43008000, while the sum is 58.

The spelling of 55284645478 in words is "fifty-five billion, two hundred eighty-four million, six hundred forty-five thousand, four hundred seventy-eight".