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12007284261 = 37571775441
BaseRepresentation
bin10110010111011000…
…01001111000100101
31010222210211020110220
423023230021320211
5144042331044021
65303245434553
7603360142440
oct131354117045
933883736426
1012007284261
115101887425
1223b126ba59
13119481523b
1481c996657
154a420dcc6
hex2cbb09e25

12007284261 has 8 divisors (see below), whose sum is σ = 18296814144. Its totient is φ = 6861305280.

The previous prime is 12007284253. The next prime is 12007284271. The reversal of 12007284261 is 16248270021.

12007284261 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12007284261 - 23 = 12007284253 is a prime.

It is a super-2 number, since 2×120072842612 (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12007284221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 285887700 + ... + 285887741.

It is an arithmetic number, because the mean of its divisors is an integer number (2287101768).

Almost surely, 212007284261 is an apocalyptic number.

It is an amenable number.

12007284261 is a deficient number, since it is larger than the sum of its proper divisors (6289529883).

12007284261 is an equidigital number, since it uses as much as digits as its factorization.

12007284261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 571775451.

The product of its (nonzero) digits is 10752, while the sum is 33.

The spelling of 12007284261 in words is "twelve billion, seven million, two hundred eighty-four thousand, two hundred sixty-one".

Divisors: 1 3 7 21 571775441 1715326323 4002428087 12007284261