55185570000 has 800 divisors, whose sum is σ = 228846245760. Its totient is φ = 12579840000.

The previous prime is 55185569993. The next prime is 55185570019. The reversal of 55185570000 is 7558155.

55185570000 is a `hidden beast` number, since 5 + 5 + 1 + 85 + 570 + 0 + 0 + 0 = 666.

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

It is a congruent number.

It is an unprimeable number.

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 159 ways as a sum of consecutive naturals, for example, 50489454 + ... + 50490546.

Almost surely, 2^55185570000 is an apocalyptic number.

55185570000 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 55185570000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (114423122880).

55185570000 is an abundant number, since it is smaller than the sum of its proper divisors (173660675760).

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

55185570000 is a wasteful number, since it uses less digits than its factorization.

55185570000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1158 (or 1131 counting only the distinct ones).

The product of its (nonzero) digits is 35000, while the sum is 36.

The spelling of 55185570000 in words is "fifty-five billion, one hundred eighty-five million, five hundred seventy thousand".