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48809812690 = 25191311961021
BaseRepresentation
bin101101011101010010…
…101010001011010010
311122222122021101120101
4231131102222023102
51244430303001230
634231203403014
73345360363622
oct553522521322
9148878241511
1048809812690
1119777959781
12956238346a
1347ab302a92
142510636882
15140a146aca
hexb5d4aa2d2

48809812690 has 32 divisors (see below), whose sum is σ = 93187765440. Its totient is φ = 18355147200.

The previous prime is 48809812673. The next prime is 48809812693. The reversal of 48809812690 is 9621890884.

48809812690 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×488098126902 (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (48809812693) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 955621 + ... + 1005400.

It is an arithmetic number, because the mean of its divisors is an integer number (2912117670).

Almost surely, 248809812690 is an apocalyptic number.

48809812690 is a deficient number, since it is larger than the sum of its proper divisors (44377952750).

48809812690 is a wasteful number, since it uses less digits than its factorization.

48809812690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1961178.

The product of its (nonzero) digits is 1990656, while the sum is 55.

The spelling of 48809812690 in words is "forty-eight billion, eight hundred nine million, eight hundred twelve thousand, six hundred ninety".

Divisors: 1 2 5 10 19 38 95 131 190 262 655 1310 2489 4978 12445 24890 1961021 3922042 9805105 19610210 37259399 74518798 186296995 256893751 372593990 513787502 1284468755 2568937510 4880981269 9761962538 24404906345 48809812690