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20839032179712 = 210331783975507
BaseRepresentation
bin1001011110011111101110…
…00111000100110000000000
32201210012011222112102022000
410233033313013010300000
510212411314214222322
6112153152541344000
74250366433621135
oct457176707046000
981705158472260
1020839032179712
11670486943609a
1224068b1868000
13b8215c961926
1452088641c58c
1526210ebd83ac
hex12f3f71c4c00

20839032179712 has 704 divisors, whose sum is σ = 66826641047040. Its totient is φ = 6391219617792.

The previous prime is 20839032179701. The next prime is 20839032179741. The reversal of 20839032179712 is 21797123093802.

It is a happy number.

20839032179712 is a `hidden beast` number, since 20 + 8 + 390 + 3 + 217 + 9 + 7 + 12 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

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, 3784096063 + ... + 3784101569.

Almost surely, 220839032179712 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 20839032179712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33413320523520).

20839032179712 is an abundant number, since it is smaller than the sum of its proper divisors (45987608867328).

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

20839032179712 is a wasteful number, since it uses less digits than its factorization.

20839032179712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5733 (or 5709 counting only the distinct ones).

The product of its (nonzero) digits is 2286144, while the sum is 54.

The spelling of 20839032179712 in words is "twenty trillion, eight hundred thirty-nine billion, thirty-two million, one hundred seventy-nine thousand, seven hundred twelve".