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68669669382 = 2371161196407
BaseRepresentation
bin111111111101000010…
…000000000000000110
320120020201002122100020
4333331002000000012
52111113413410012
651314005200010
74650461362506
oct777502000006
9216221078306
1068669669382
1127139268a86
1211385400006
136624950082
14347607ba06
151bbd92da8c
hexffd080006

68669669382 has 16 divisors (see below), whose sum is σ = 139273696512. Its totient is φ = 22567496840.

The previous prime is 68669669339. The next prime is 68669669399. The reversal of 68669669382 is 28396696686.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 80597778 + ... + 80598629.

It is an arithmetic number, because the mean of its divisors is an integer number (8704606032).

Almost surely, 268669669382 is an apocalyptic number.

68669669382 is an abundant number, since it is smaller than the sum of its proper divisors (70604027130).

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

68669669382 is a wasteful number, since it uses less digits than its factorization.

68669669382 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161196483.

The product of its digits is 241864704, while the sum is 69.

The spelling of 68669669382 in words is "sixty-eight billion, six hundred sixty-nine million, six hundred sixty-nine thousand, three hundred eighty-two".

Divisors: 1 2 3 6 71 142 213 426 161196407 322392814 483589221 967178442 11444944897 22889889794 34334834691 68669669382