55218086352 has 240 divisors, whose sum is σ = 187409005056. Its totient is φ = 14947200000.

The previous prime is 55218086309. The next prime is 55218086369. The reversal of 55218086352 is 25368081255.

55218086352 is a `hidden beast` number, since 5 + 5 + 2 + 1 + 8 + 0 + 8 + 635 + 2 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 55218086298 and 55218086307.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 595102 + ... + 681602.

Almost surely, 2^55218086352 is an apocalyptic number.

55218086352 is a gapful number since it is divisible by the number (52) 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 55218086352, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (93704502528).

55218086352 is an abundant number, since it is smaller than the sum of its proper divisors (132190918704).

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

55218086352 is a wasteful number, since it uses less digits than its factorization.

55218086352 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86570 (or 86561 counting only the distinct ones).

The product of its (nonzero) digits is 576000, while the sum is 45.

The spelling of 55218086352 in words is "fifty-five billion, two hundred eighteen million, eighty-six thousand, three hundred fifty-two".