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55668416984 = 2312754791749
BaseRepresentation
bin110011110110000110…
…001010000111011000
312022200121221120220122
4303312012022013120
51403002103320414
641323531212412
74010341510535
oct636606120730
9168617846818
1055668416984
1121677408694
12a9572a7108
13533223030b
1429a14a7d8c
1516ac330b8e
hexcf618a1d8

55668416984 has 16 divisors (see below), whose sum is σ = 105200160000. Its totient is φ = 27615040992.

The previous prime is 55668416957. The next prime is 55668416989. The reversal of 55668416984 is 48961486655.

It is a Smith number, since the sum of its digits (62) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55668416989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27394859 + ... + 27396890.

It is an arithmetic number, because the mean of its divisors is an integer number (6575010000).

Almost surely, 255668416984 is an apocalyptic number.

It is an amenable number.

55668416984 is a deficient number, since it is larger than the sum of its proper divisors (49531743016).

55668416984 is a wasteful number, since it uses less digits than its factorization.

55668416984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54791882 (or 54791878 counting only the distinct ones).

The product of its digits is 49766400, while the sum is 62.

The spelling of 55668416984 in words is "fifty-five billion, six hundred sixty-eight million, four hundred sixteen thousand, nine hundred eighty-four".

Divisors: 1 2 4 8 127 254 508 1016 54791749 109583498 219166996 438333992 6958552123 13917104246 27834208492 55668416984