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51081582710 = 2549110639787
BaseRepresentation
bin101111100100101100…
…110001100001110110
311212211222000021011202
4233210230301201312
51314103341121320
635244435332502
73455564201054
oct574454614166
9155758007152
1051081582710
111a733249164
129a97151132
134a80b727b2
1426882371d4
1514de7ddb75
hexbe4b31876

51081582710 has 32 divisors (see below), whose sum is σ = 92230209792. Its totient is φ = 20369754720.

The previous prime is 51081582697. The next prime is 51081582719. The reversal of 51081582710 is 1728518015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51081582719) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5214437 + ... + 5224223.

It is an arithmetic number, because the mean of its divisors is an integer number (2882194056).

Almost surely, 251081582710 is an apocalyptic number.

51081582710 is a deficient number, since it is larger than the sum of its proper divisors (41148627082).

51081582710 is a wasteful number, since it uses less digits than its factorization.

51081582710 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11348.

The product of its (nonzero) digits is 22400, while the sum is 38.

The spelling of 51081582710 in words is "fifty-one billion, eighty-one million, five hundred eighty-two thousand, seven hundred ten".

Divisors: 1 2 5 10 491 982 1063 2126 2455 4910 5315 9787 10630 19574 48935 97870 521933 1043866 2609665 4805417 5219330 9610834 10403581 20807162 24027085 48054170 52017905 104035810 5108158271 10216316542 25540791355 51081582710