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6761240145 = 3251113659071
BaseRepresentation
bin1100100110000000…
…00101011001010001
3122110012110120211200
412103000011121101
5102321334141040
63034524501413
7326356410252
oct62300053121
918405416750
106761240145
11295a5a8880
1213883aa869
138399ca71a
14481d68b29
152988a5630
hex193005651

6761240145 has 24 divisors (see below), whose sum is σ = 12784891392. Its totient is φ = 3278176800.

The previous prime is 6761240113. The next prime is 6761240147. The reversal of 6761240145 is 5410421676.

It is not a de Polignac number, because 6761240145 - 25 = 6761240113 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6761240147) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6829041 + ... + 6830030.

It is an arithmetic number, because the mean of its divisors is an integer number (532703808).

Almost surely, 26761240145 is an apocalyptic number.

It is an amenable number.

6761240145 is a deficient number, since it is larger than the sum of its proper divisors (6023651247).

6761240145 is a wasteful number, since it uses less digits than its factorization.

6761240145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13659093 (or 13659090 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 36.

The square root of 6761240145 is about 82226.7605162699. The cubic root of 6761240145 is about 1890.9300075710.

The spelling of 6761240145 in words is "six billion, seven hundred sixty-one million, two hundred forty thousand, one hundred forty-five".

Divisors: 1 3 5 9 11 15 33 45 55 99 165 495 13659071 40977213 68295355 122931639 150249781 204886065 450749343 614658195 751248905 1352248029 2253746715 6761240145