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51401301200 = 2452671917959
BaseRepresentation
bin101111110111110000…
…011001110011010000
311220200020121122111022
4233313300121303100
51320232213114300
635340300135012
73466525564664
oct576760316320
9156606548438
1051401301200
111a887770417
129b66237468
134b02185832
1426b88a08a4
15150c8e5285
hexbf7c19cd0

51401301200 has 60 divisors (see below), whose sum is σ = 125334850080. Its totient is φ = 20253636480.

The previous prime is 51401301187. The next prime is 51401301223. The reversal of 51401301200 is 210310415.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 932180 + ... + 985779.

It is an arithmetic number, because the mean of its divisors is an integer number (2088914168).

Almost surely, 251401301200 is an apocalyptic number.

51401301200 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

51401301200 is an abundant number, since it is smaller than the sum of its proper divisors (73933548880).

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

51401301200 is a wasteful number, since it uses less digits than its factorization.

51401301200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1918044 (or 1918033 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 17.

Adding to 51401301200 its reverse (210310415), we get a palindrome (51611611615).

The spelling of 51401301200 in words is "fifty-one billion, four hundred one million, three hundred one thousand, two hundred".

Divisors: 1 2 4 5 8 10 16 20 25 40 50 67 80 100 134 200 268 335 400 536 670 1072 1340 1675 2680 3350 5360 6700 13400 26800 1917959 3835918 7671836 9589795 15343672 19179590 30687344 38359180 47948975 76718360 95897950 128503253 153436720 191795900 257006506 383591800 514013012 642516265 767183600 1028026024 1285032530 2056052048 2570065060 3212581325 5140130120 6425162650 10280260240 12850325300 25700650600 51401301200