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6861086141279 = 13051515256929
BaseRepresentation
bin110001111010111100010…
…0110100010101101011111
3220021220122220000210100212
41203311320212202231133
51344403001023010104
622331534531243035
71305461052643436
oct143657046425537
926256586023325
106861086141279
112205852293227
12929883a4947b
133a9cc7aa42a6
1419a114d7a11d
15bd71502736e
hex63d789a2b5f

6861086141279 has 4 divisors (see below), whose sum is σ = 6861092703360. Its totient is φ = 6861079579200.

The previous prime is 6861086141263. The next prime is 6861086141311. The reversal of 6861086141279 is 9721416801686.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 6861086141279 - 24 = 6861086141263 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6861086141579) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1323314 + ... + 3933615.

It is an arithmetic number, because the mean of its divisors is an integer number (1715273175840).

Almost surely, 26861086141279 is an apocalyptic number.

6861086141279 is a deficient number, since it is larger than the sum of its proper divisors (6562081).

6861086141279 is a wasteful number, since it uses less digits than its factorization.

6861086141279 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6562080.

The product of its (nonzero) digits is 6967296, while the sum is 59.

The spelling of 6861086141279 in words is "six trillion, eight hundred sixty-one billion, eighty-six million, one hundred forty-one thousand, two hundred seventy-nine".

Divisors: 1 1305151 5256929 6861086141279