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69668444379 = 3172949994399
BaseRepresentation
bin100000011100010010…
…0000001100011011011
320122211022110200001210
41000320210001203123
52120140110210004
652001044314203
75014310002122
oct1007044014333
9218738420053
1069668444379
1127601025466
12116039a2963
13675384b7b1
14352c98aab9
151c2b46c089
hex10389018db

69668444379 has 32 divisors (see below), whose sum is σ = 101952000000. Its totient is φ = 42121142784.

The previous prime is 69668444357. The next prime is 69668444381. The reversal of 69668444379 is 97344486696.

It is a happy number.

It is not a de Polignac number, because 69668444379 - 211 = 69668442331 is a prime.

It is not an unprimeable number, because it can be changed into a prime (69668444179) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 690822 + ... + 785220.

It is an arithmetic number, because the mean of its divisors is an integer number (3186000000).

Almost surely, 269668444379 is an apocalyptic number.

69668444379 is a deficient number, since it is larger than the sum of its proper divisors (32283555621).

69668444379 is a wasteful number, since it uses less digits than its factorization.

69668444379 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94947.

The product of its digits is 188116992, while the sum is 66.

The spelling of 69668444379 in words is "sixty-nine billion, six hundred sixty-eight million, four hundred forty-four thousand, three hundred seventy-nine".

Divisors: 1 3 17 29 51 87 493 499 1479 1497 8483 14471 25449 43413 94399 246007 283197 738021 1604783 2737571 4814349 8212713 46538707 47105101 139616121 141315303 800786717 1366047929 2402360151 4098143787 23222814793 69668444379