55512072000 has 2688 divisors, whose sum is σ = 284836331520. Its totient is φ = 9953280000.

The previous prime is 55512071939. The next prime is 55512072001. The reversal of 55512072000 is 27021555.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55512072001) by changing a digit.

It is a polite number, since it can be written in 383 ways as a sum of consecutive naturals, for example, 1790711985 + ... + 1790712015.

Almost surely, 2^55512072000 is an apocalyptic number.

55512072000 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 55512072000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (142418165760).

55512072000 is an abundant number, since it is smaller than the sum of its proper divisors (229324259520).

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

55512072000 is a wasteful number, since it uses less digits than its factorization.

55512072000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118 (or 95 counting only the distinct ones).

The product of its (nonzero) digits is 3500, while the sum is 27.

Adding to 55512072000 its reverse (27021555), we get a palindrome (55539093555).

The spelling of 55512072000 in words is "fifty-five billion, five hundred twelve million, seventy-two thousand".