55432724544 has 168 divisors, whose sum is σ = 164971829568. Its totient is φ = 18455247360.

The previous prime is 55432724531. The next prime is 55432724591. The reversal of 55432724544 is 44542723455.

55432724544 is a `hidden beast` number, since 5 + 5 + 4 + 32 + 72 + 4 + 544 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 55432724544.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17369989 + ... + 17373179.

It is an arithmetic number, because the mean of its divisors is an integer number (981975176).

Almost surely, 2^55432724544 is an apocalyptic number.

55432724544 is a gapful number since it is divisible by the number (54) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55432724544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (82485914784).

55432724544 is an abundant number, since it is smaller than the sum of its proper divisors (109539105024).

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

55432724544 is a wasteful number, since it uses less digits than its factorization.

55432724544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4335 (or 4313 counting only the distinct ones).

The product of its digits is 2688000, while the sum is 45.

The spelling of 55432724544 in words is "fifty-five billion, four hundred thirty-two million, seven hundred twenty-four thousand, five hundred forty-four".