55182943872 has 528 divisors, whose sum is σ = 193111283250. Its totient is φ = 15660739584.

The previous prime is 55182943861. The next prime is 55182943903. The reversal of 55182943872 is 27834928155.

55182943872 is a `hidden beast` number, since 5 + 518 + 2 + 9 + 43 + 87 + 2 = 666.

It can be written as a sum of positive squares in only one way, i.e., 53516344896 + 1666598976 = 231336^2 + 40824^2 .

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 65 ways as a sum of consecutive naturals, for example, 370355254 + ... + 370355402.

Almost surely, 2^55182943872 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 55182943872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (96555641625).

55182943872 is an abundant number, since it is smaller than the sum of its proper divisors (137928339378).

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

55182943872 is an frugal number, since it uses more digits than its factorization.

55182943872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 207 (or 161 counting only the distinct ones).

The product of its digits is 4838400, while the sum is 54.

The spelling of 55182943872 in words is "fifty-five billion, one hundred eighty-two million, nine hundred forty-three thousand, eight hundred seventy-two".