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54664918885 = 571153985687
BaseRepresentation
bin110010111010010010…
…000111011101100101
312020002200200121022101
4302322102013131211
51343423204401020
641040202532101
73643435100233
oct627222073545
9166080617271
1054664918885
1121201a15715
12a717207031
135202369b65
1429080c9953
15164e1ad00a
hexcba487765

54664918885 has 8 divisors (see below), whose sum is σ = 66521817216. Its totient is φ = 43115992080.

The previous prime is 54664918883. The next prime is 54664918897. The reversal of 54664918885 is 58881946645.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 54664918885 - 21 = 54664918883 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54664918883) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 76992489 + ... + 76993198.

It is an arithmetic number, because the mean of its divisors is an integer number (8315227152).

Almost surely, 254664918885 is an apocalyptic number.

It is an amenable number.

54664918885 is a deficient number, since it is larger than the sum of its proper divisors (11856898331).

54664918885 is a wasteful number, since it uses less digits than its factorization.

54664918885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153985763.

The product of its digits is 66355200, while the sum is 64.

The spelling of 54664918885 in words is "fifty-four billion, six hundred sixty-four million, nine hundred eighteen thousand, eight hundred eighty-five".

Divisors: 1 5 71 355 153985687 769928435 10932983777 54664918885