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12005192007 = 34148212247
BaseRepresentation
bin10110010111001000…
…01011000101000111
31010222122212221110000
423023210023011013
5144041312121012
65303132532343
7603333306534
oct131344130507
933878787400
1012005192007
115100688496
1223b06210b3
131194261b13
1481c5add8b
154a3e48ddc
hex2cb90b147

12005192007 has 10 divisors (see below), whose sum is σ = 17933682008. Its totient is φ = 8003461284.

The previous prime is 12005191993. The next prime is 12005192027. The reversal of 12005192007 is 70029150021.

12005192007 is a `hidden beast` number, since 120 + 0 + 519 + 20 + 0 + 7 = 666.

It is not a de Polignac number, because 12005192007 - 27 = 12005191879 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12005192027) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 74106043 + ... + 74106204.

Almost surely, 212005192007 is an apocalyptic number.

12005192007 is a deficient number, since it is larger than the sum of its proper divisors (5928490001).

12005192007 is an equidigital number, since it uses as much as digits as its factorization.

12005192007 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148212259 (or 148212250 counting only the distinct ones).

The product of its (nonzero) digits is 1260, while the sum is 27.

The spelling of 12005192007 in words is "twelve billion, five million, one hundred ninety-two thousand, seven".

Divisors: 1 3 9 27 81 148212247 444636741 1333910223 4001730669 12005192007