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12851942880 = 2535717713169
BaseRepresentation
bin10111111100000100…
…10001010111100000
31020011200012100021110
423332002101113200
5202310044133010
65523141423320
7633324466140
oct137602212740
936150170243
1012851942880
1154a564a9a7
1225a810ab40
13129a80323a
1489cc28920
15503458120
hex2fe0915e0

12851942880 has 384 divisors, whose sum is σ = 49694238720. Its totient is φ = 2724986880.

The previous prime is 12851942839. The next prime is 12851942891. The reversal of 12851942880 is 8824915821.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 4053936 + ... + 4057104.

It is an arithmetic number, because the mean of its divisors is an integer number (129412080).

Almost surely, 212851942880 is an apocalyptic number.

12851942880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12851942880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24847119360).

12851942880 is an abundant number, since it is smaller than the sum of its proper divisors (36842295840).

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

12851942880 is a wasteful number, since it uses less digits than its factorization.

12851942880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3282 (or 3274 counting only the distinct ones).

The product of its (nonzero) digits is 368640, while the sum is 48.

The spelling of 12851942880 in words is "twelve billion, eight hundred fifty-one million, nine hundred forty-two thousand, eight hundred eighty".