55238964480 has 864 divisors, whose sum is σ = 237540925440. Its totient is φ = 11565711360.

The previous prime is 55238964479. The next prime is 55238964527. The reversal of 55238964480 is 8446983255.

55238964480 is a `hidden beast` number, since 5 + 5 + 23 + 89 + 64 + 480 = 666.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 47496379 + ... + 47497541.

Almost surely, 2^55238964480 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 55238964480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (118770462720).

55238964480 is an abundant number, since it is smaller than the sum of its proper divisors (182301960960).

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

55238964480 is a wasteful number, since it uses less digits than its factorization.

55238964480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1247 (or 1230 counting only the distinct ones).

The product of its (nonzero) digits is 8294400, while the sum is 54.

The spelling of 55238964480 in words is "fifty-five billion, two hundred thirty-eight million, nine hundred sixty-four thousand, four hundred eighty".