55427586432 has 128 divisors (see below), whose sum is σ = 151005345120. Its totient is φ = 18003148800.

The previous prime is 55427586427. The next prime is 55427586443. The reversal of 55427586432 is 23468572455.

It is a tau number, because it is divible by the number of its divisors (128).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17206582 + ... + 17209802.

Almost surely, 2^55427586432 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 55427586432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (75502672560).

55427586432 is an abundant number, since it is smaller than the sum of its proper divisors (95577758688).

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

55427586432 is a wasteful number, since it uses less digits than its factorization.

55427586432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4372 (or 4360 counting only the distinct ones).

The product of its digits is 8064000, while the sum is 51.

The spelling of 55427586432 in words is "fifty-five billion, four hundred twenty-seven million, five hundred eighty-six thousand, four hundred thirty-two".