55272729600 has 792 divisors, whose sum is σ = 218932741872. Its totient is φ = 13212057600.

The previous prime is 55272729599. The next prime is 55272729607. The reversal of 55272729600 is 692727255.

55272729600 is a `hidden beast` number, since 552 + 7 + 2 + 7 + 2 + 96 + 0 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (792).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (55272729607) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 286387104 + ... + 286387296.

Almost surely, 2^55272729600 is an apocalyptic number.

55272729600 is a gapful number since it is divisible by the number (50) 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 55272729600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (109466370936).

55272729600 is an abundant number, since it is smaller than the sum of its proper divisors (163660012272).

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

55272729600 is a wasteful number, since it uses less digits than its factorization.

55272729600 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 353 (or 327 counting only the distinct ones).

The product of its (nonzero) digits is 529200, while the sum is 45.

The spelling of 55272729600 in words is "fifty-five billion, two hundred seventy-two million, seven hundred twenty-nine thousand, six hundred".