55278074880 has 528 divisors, whose sum is σ = 228447558144. Its totient is φ = 12084019200.

The previous prime is 55278074867. The next prime is 55278074881. The reversal of 55278074880 is 8847087255.

55278074880 is a `hidden beast` number, since 552 + 7 + 8 + 0 + 7 + 4 + 8 + 80 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55278074881) 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 47 ways as a sum of consecutive naturals, for example, 7415155 + ... + 7422605.

Almost surely, 2^55278074880 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55278074880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (114223779072).

55278074880 is an abundant number, since it is smaller than the sum of its proper divisors (173169483264).

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

55278074880 is a wasteful number, since it uses less digits than its factorization.

55278074880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7512 (or 7491 counting only the distinct ones).

The product of its (nonzero) digits is 5017600, while the sum is 54.

The spelling of 55278074880 in words is "fifty-five billion, two hundred seventy-eight million, seventy-four thousand, eight hundred eighty".