Base | Representation |
---|---|
bin | 10011001110000001101… |
… | …100001100000101010001 |
3 | 11200021001000000102212111 |
4 | 103032001230030011101 |
5 | 133114324041221221 |
6 | 2450422500425321 |
7 | 164263640416000 |
oct | 23160154140521 |
9 | 4607030012774 |
10 | 1320730804561 |
11 | 46a134120523 |
12 | 193b720a8241 |
13 | 977100086bc |
14 | 47cd0946c37 |
15 | 2454ddeabe1 |
hex | 13381b0c151 |
1320730804561 has 32 divisors (see below), whose sum is σ = 1544647104000. Its totient is φ = 1128799123200.
The previous prime is 1320730804553. The next prime is 1320730804567. The reversal of 1320730804561 is 1654080370231.
It is not a de Polignac number, because 1320730804561 - 23 = 1320730804553 is a prime.
It is not an unprimeable number, because it can be changed into a prime (1320730804567) by changing a digit.
It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 201604236 + ... + 201610786.
It is an arithmetic number, because the mean of its divisors is an integer number (48270222000).
Almost surely, 21320730804561 is an apocalyptic number.
It is an amenable number.
1320730804561 is a deficient number, since it is larger than the sum of its proper divisors (223916299439).
1320730804561 is an equidigital number, since it uses as much as digits as its factorization.
1320730804561 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 8174 (or 8160 counting only the distinct ones).
The product of its (nonzero) digits is 120960, while the sum is 40.
The spelling of 1320730804561 in words is "one trillion, three hundred twenty billion, seven hundred thirty million, eight hundred four thousand, five hundred sixty-one".
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