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516534620087880 = 23325291911030125147
BaseRepresentation
bin111010101110010010001011…
…0100010110110011001001000
32111201220020010210100211212200
41311130210112202312121020
51020200400400220303010
65030324421213440200
7213541252260650622
oct16534442642663110
92451806123324780
10516534620087880
1113a647114012109
1249b23a531a0060
131922b00c5c3564
14917a5a2451c12
153eab3b6945cc0
hex1d5c9168b6648

516534620087880 has 384 divisors, whose sum is σ = 1745956191283200. Its totient is φ = 132278420736000.

The previous prime is 516534620087867. The next prime is 516534620087911. The reversal of 516534620087880 is 88780026435615.

516534620087880 is a `hidden beast` number, since 5 + 1 + 6 + 5 + 346 + 200 + 8 + 7 + 8 + 80 = 666.

It is a Smith number, since the sum of its digits (63) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 20540593467 + ... + 20540618613.

It is an arithmetic number, because the mean of its divisors is an integer number (4546760914800).

Almost surely, 2516534620087880 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 516534620087880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (872978095641600).

516534620087880 is an abundant number, since it is smaller than the sum of its proper divisors (1229421571195320).

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

516534620087880 is a wasteful number, since it uses less digits than its factorization.

516534620087880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35685 (or 35678 counting only the distinct ones).

The product of its (nonzero) digits is 77414400, while the sum is 63.

The spelling of 516534620087880 in words is "five hundred sixteen trillion, five hundred thirty-four billion, six hundred twenty million, eighty-seven thousand, eight hundred eighty".