55211427180 has 720 divisors, whose sum is σ = 217876748544. Its totient is φ = 11237667840.

The previous prime is 55211427151. The next prime is 55211427217. The reversal of 55211427180 is 8172411255.

It is a happy number.

55211427180 is a `hidden beast` number, since 5 + 5 + 211 + 427 + 18 + 0 = 666.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

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 239 ways as a sum of consecutive naturals, for example, 174168382 + ... + 174168698.

Almost surely, 2^55211427180 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 55211427180, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (108938374272).

55211427180 is an abundant number, since it is smaller than the sum of its proper divisors (162665321364).

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

55211427180 is a wasteful number, since it uses less digits than its factorization.

55211427180 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 404 (or 378 counting only the distinct ones).

The product of its (nonzero) digits is 22400, while the sum is 36.

The spelling of 55211427180 in words is "fifty-five billion, two hundred eleven million, four hundred twenty-seven thousand, one hundred eighty".