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55210180608 = 21534113161
BaseRepresentation
bin110011011010110010…
…001000000000000000
312021111200200202210000
4303122302020000000
51401032301234413
641210241440000
73663105535452
oct633262100000
9167450622700
1055210180608
1121461786940
12a849940000
13528b30b72b
14295a6a42d2
151681eb7073
hexcdac88000

55210180608 has 640 divisors, whose sum is σ = 188791130880. Its totient is φ = 15925248000.

The previous prime is 55210180561. The next prime is 55210180621. The reversal of 55210180608 is 80608101255.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 905084898 + ... + 905084958.

It is an arithmetic number, because the mean of its divisors is an integer number (294986142).

Almost surely, 255210180608 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 55210180608, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (94395565440).

55210180608 is an abundant number, since it is smaller than the sum of its proper divisors (133580950272).

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

55210180608 is an equidigital number, since it uses as much as digits as its factorization.

55210180608 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145 (or 108 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 36.

The spelling of 55210180608 in words is "fifty-five billion, two hundred ten million, one hundred eighty thousand, six hundred eight".