Base | Representation |
---|---|
bin | 1001101000101111010000… |
… | …10001000011000001110100 |
3 | 2210000211121011111011022110 |
4 | 10310113220101003001310 |
5 | 10234143101414013012 |
6 | 113022555240131020 |
7 | 4314666000606213 |
oct | 464275021030164 |
9 | 83024534434273 |
10 | 21190970454132 |
11 | 6830049412726 |
12 | 2462b51166a70 |
13 | ba93b8c7509b |
14 | 53391147d07a |
15 | 26b35beaa73c |
hex | 1345e8443074 |
21190970454132 has 192 divisors, whose sum is σ = 57136036608000. Its totient is φ = 6075460081152.
The previous prime is 21190970454029. The next prime is 21190970454133. The reversal of 21190970454132 is 23145407909112.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (21190970454133) by changing a digit.
It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 7791598 + ... + 10153370.
It is an arithmetic number, because the mean of its divisors is an integer number (297583524000).
Almost surely, 221190970454132 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 21190970454132, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28568018304000).
21190970454132 is an abundant number, since it is smaller than the sum of its proper divisors (35945066153868).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
21190970454132 is a wasteful number, since it uses less digits than its factorization.
21190970454132 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 2361910 (or 2361908 counting only the distinct ones).
The product of its (nonzero) digits is 544320, while the sum is 48.
The spelling of 21190970454132 in words is "twenty-one trillion, one hundred ninety billion, nine hundred seventy million, four hundred fifty-four thousand, one hundred thirty-two".
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