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5081581879 = 11971475759
BaseRepresentation
bin1001011101110001…
…01100100100110111
3111010010220002212021
410232320230210313
540401341110004
62200123534011
7236632506343
oct45670544467
914103802767
105081581879
112178469750
12b9998a307
1362ca23caa
14362c5a623
151eb1bdd54
hex12ee2c937

5081581879 has 8 divisors (see below), whose sum is σ = 5549264640. Its totient is φ = 4614852600.

The previous prime is 5081581867. The next prime is 5081581909. The reversal of 5081581879 is 9781851805.

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

It is a cyclic number.

It is not a de Polignac number, because 5081581879 - 213 = 5081573687 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 (5081581819) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 227199 + ... + 248560.

It is an arithmetic number, because the mean of its divisors is an integer number (693658080).

Almost surely, 25081581879 is an apocalyptic number.

5081581879 is a deficient number, since it is larger than the sum of its proper divisors (467682761).

5081581879 is a wasteful number, since it uses less digits than its factorization.

5081581879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 476741.

The product of its (nonzero) digits is 806400, while the sum is 52.

The square root of 5081581879 is about 71285.2150098462. The cubic root of 5081581879 is about 1719.2260217691.

The spelling of 5081581879 in words is "five billion, eighty-one million, five hundred eighty-one thousand, eight hundred seventy-nine".

Divisors: 1 11 971 10681 475759 5233349 461961989 5081581879