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69880434210 = 2345192353677
BaseRepresentation
bin100000100010100110…
…0101100111000100010
320200101002100212110000
41001011030230320202
52121103342343320
652034100120430
75022462614226
oct1010514547042
9220332325400
1069880434210
11276aa757574
1211662996116
136788743272
14354cbb0786
151c3ed93c90
hex104532ce22

69880434210 has 240 divisors, whose sum is σ = 199166277816. Its totient is φ = 17577990144.

The previous prime is 69880434163. The next prime is 69880434223. The reversal of 69880434210 is 1243408896.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 68182087689 + 1698346521 = 261117^2 + 41211^2 .

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 103220392 + ... + 103221068.

Almost surely, 269880434210 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 69880434210, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (99583138908).

69880434210 is an abundant number, since it is smaller than the sum of its proper divisors (129285843606).

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

69880434210 is a wasteful number, since it uses less digits than its factorization.

69880434210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1087 (or 1059 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 45.

The spelling of 69880434210 in words is "sixty-nine billion, eight hundred eighty million, four hundred thirty-four thousand, two hundred ten".