55732773888 has 528 divisors, whose sum is σ = 188855499456. Its totient is φ = 15642132480.

The previous prime is 55732773883. The next prime is 55732773911. The reversal of 55732773888 is 88837723755.

55732773888 is a `hidden beast` number, since 5 + 573 + 27 + 7 + 38 + 8 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (528).

It is a super-2 number, since 2×55732773888² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (55732773883) 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, 125807395 + ... + 125807837.

Almost surely, 2^55732773888 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 55732773888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (94427749728).

55732773888 is an abundant number, since it is smaller than the sum of its proper divisors (133122725568).

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

55732773888 is a wasteful number, since it uses less digits than its factorization.

55732773888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 570 (or 549 counting only the distinct ones).

The product of its digits is 79027200, while the sum is 63.

The spelling of 55732773888 in words is "fifty-five billion, seven hundred thirty-two million, seven hundred seventy-three thousand, eight hundred eighty-eight".