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12007543107 = 371978738239
BaseRepresentation
bin10110010111011010…
…01001000101000011
31010222211022101112210
423023231021011003
5144042412334412
65303255153203
7603362301210
oct131355110503
933884271483
1012007543107
115101a4394a
1223b1375803
1311948a5cc1
1481ca22b07
154a426083c
hex2cbb49143

12007543107 has 32 divisors (see below), whose sum is σ = 19285196800. Its totient is φ = 6491894688.

The previous prime is 12007543099. The next prime is 12007543129. The reversal of 12007543107 is 70134570021.

It is not a de Polignac number, because 12007543107 - 23 = 12007543099 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12007543147) 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, 294894 + ... + 333132.

It is an arithmetic number, because the mean of its divisors is an integer number (602662400).

Almost surely, 212007543107 is an apocalyptic number.

12007543107 is a deficient number, since it is larger than the sum of its proper divisors (7277653693).

12007543107 is a wasteful number, since it uses less digits than its factorization.

12007543107 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39055.

The product of its (nonzero) digits is 5880, while the sum is 30.

The spelling of 12007543107 in words is "twelve billion, seven million, five hundred forty-three thousand, one hundred seven".

Divisors: 1 3 7 19 21 57 133 399 787 2361 5509 14953 16527 38239 44859 104671 114717 267673 314013 726541 803019 2179623 5085787 15257361 30094093 90282279 210658651 571787767 631975953 1715363301 4002514369 12007543107