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12700539180 = 2234571765881
BaseRepresentation
bin10111101010000001…
…01101100100101100
31012210010022020110000
423311000231210230
5202002314223210
65500132344300
7626505542010
oct136500554454
935703266400
1012700539180
11542813a07a
122565475090
131275332454
14886a96540
154e4eecac0
hex2f502d92c

12700539180 has 240 divisors, whose sum is σ = 48212974656. Its totient is φ = 2732175360.

The previous prime is 12700539149. The next prime is 12700539191. The reversal of 12700539180 is 8193500721.

It is a super-2 number, since 2×127005391802 (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 159840 + ... + 225720.

Almost surely, 212700539180 is an apocalyptic number.

12700539180 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 12700539180, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24106487328).

12700539180 is an abundant number, since it is smaller than the sum of its proper divisors (35512435476).

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

12700539180 is a wasteful number, since it uses less digits than its factorization.

12700539180 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65926 (or 65915 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 36.

The spelling of 12700539180 in words is "twelve billion, seven hundred million, five hundred thirty-nine thousand, one hundred eighty".