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21234628644312 = 2331675298061039
BaseRepresentation
bin1001101010000000100100…
…11111110100110111011000
32210012000021210002000100010
410311000102133310313120
510240402004413104222
6113055015334441520
74321102615240416
oct465002237646730
983160253060303
1021234628644312
116847612314136
12246b4b62032a0
13bb0555b9ca05
14535a938262b6
1526c564bea80c
hex1350127f4dd8

21234628644312 has 32 divisors (see below), whose sum is σ = 53404455283200. Its totient is φ = 7035825058464.

The previous prime is 21234628644287. The next prime is 21234628644377. The reversal of 21234628644312 is 21344682643212.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2649026512 + ... + 2649034527.

It is an arithmetic number, because the mean of its divisors is an integer number (1668889227600).

Almost surely, 221234628644312 is an apocalyptic number.

It is an amenable number.

21234628644312 is an abundant number, since it is smaller than the sum of its proper divisors (32169826638888).

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

21234628644312 is a wasteful number, since it uses less digits than its factorization.

21234628644312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5298061215 (or 5298061211 counting only the distinct ones).

The product of its digits is 2654208, while the sum is 48.

The spelling of 21234628644312 in words is "twenty-one trillion, two hundred thirty-four billion, six hundred twenty-eight million, six hundred forty-four thousand, three hundred twelve".

Divisors: 1 2 3 4 6 8 12 24 167 334 501 668 1002 1336 2004 4008 5298061039 10596122078 15894183117 21192244156 31788366234 42384488312 63576732468 127153464936 884776193513 1769552387026 2654328580539 3539104774052 5308657161078 7078209548104 10617314322156 21234628644312