55388947584 has 64 divisors (see below), whose sum is σ = 147251435040. Its totient is φ = 18447353856.

The previous prime is 55388947583. The next prime is 55388947631. The reversal of 55388947584 is 48574988355.

It is a tau number, because it is divible by the number of its divisors (64).

It is not an unprimeable number, because it can be changed into a prime (55388947583) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 397659 + ... + 518565.

Almost surely, 2^55388947584 is an apocalyptic number.

It is an amenable number.

55388947584 is an abundant number, since it is smaller than the sum of its proper divisors (91862487456).

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

55388947584 is a wasteful number, since it uses less digits than its factorization.

55388947584 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122117 (or 122105 counting only the distinct ones).

The product of its digits is 193536000, while the sum is 66.

The spelling of 55388947584 in words is "fifty-five billion, three hundred eighty-eight million, nine hundred forty-seven thousand, five hundred eighty-four".