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12630045029 = 72257756021
BaseRepresentation
bin10111100001100111…
…10011000101100101
31012121012122202122112
423300303303011211
5201331242420104
65445133410405
7624661416500
oct136063630545
935535582575
1012630045029
1153a1370848
122545939a05
13126384ca34
1487b586137
154ddc2586e
hex2f0cf3165

12630045029 has 6 divisors (see below), whose sum is σ = 14692093254. Its totient is φ = 10825752840.

The previous prime is 12630045023. The next prime is 12630045031. The reversal of 12630045029 is 92054003621.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 8447448100 + 4182596929 = 91910^2 + 64673^2 .

It is not a de Polignac number, because 12630045029 - 28 = 12630044773 is a prime.

It is a super-2 number, since 2×126300450292 (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12630044986 and 12630045004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12630045023) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 128877962 + ... + 128878059.

It is an arithmetic number, because the mean of its divisors is an integer number (2448682209).

Almost surely, 212630045029 is an apocalyptic number.

It is an amenable number.

12630045029 is a deficient number, since it is larger than the sum of its proper divisors (2062048225).

12630045029 is an equidigital number, since it uses as much as digits as its factorization.

12630045029 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 257756035 (or 257756028 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 32.

The spelling of 12630045029 in words is "twelve billion, six hundred thirty million, forty-five thousand, twenty-nine".

Divisors: 1 7 49 257756021 1804292147 12630045029