55143534600 has 576 divisors, whose sum is σ = 237148928640. Its totient is φ = 11147673600.

The previous prime is 55143534599. The next prime is 55143534613. The reversal of 55143534600 is 643534155.

55143534600 is a `hidden beast` number, since 5 + 5 + 1 + 43 + 5 + 3 + 4 + 600 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 5122824 + ... + 5133576.

It is an arithmetic number, because the mean of its divisors is an integer number (411716890).

Almost surely, 2^55143534600 is an apocalyptic number.

55143534600 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 55143534600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (118574464320).

55143534600 is an abundant number, since it is smaller than the sum of its proper divisors (182005394040).

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

55143534600 is a wasteful number, since it uses less digits than its factorization.

55143534600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10830 (or 10818 counting only the distinct ones).

The product of its (nonzero) digits is 108000, while the sum is 36.

The spelling of 55143534600 in words is "fifty-five billion, one hundred forty-three million, five hundred thirty-four thousand, six hundred".