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51105105106 = 21119972112577
BaseRepresentation
bin101111100110000110…
…100000010011010010
311212220121021022211121
4233212012200103102
51314130401330411
635251035432454
73456301140346
oct574606402322
9155817238747
1051105105106
111a745554960
129aa2bb572a
134a859ba283
14268b3db626
1514e18d8571
hexbe61a04d2

51105105106 has 32 divisors (see below), whose sum is σ = 88043987520. Its totient is φ = 22002969600.

The previous prime is 51105105091. The next prime is 51105105119. The reversal of 51105105106 is 60150150115.

It is a super-2 number, since 2×511051051062 (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4057090 + ... + 4069666.

It is an arithmetic number, because the mean of its divisors is an integer number (2751374610).

Almost surely, 251105105106 is an apocalyptic number.

51105105106 is a deficient number, since it is larger than the sum of its proper divisors (36938882414).

51105105106 is a wasteful number, since it uses less digits than its factorization.

51105105106 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22330.

The product of its (nonzero) digits is 750, while the sum is 25.

The spelling of 51105105106 in words is "fifty-one billion, one hundred five million, one hundred five thousand, one hundred six".

Divisors: 1 2 11 19 22 38 209 418 9721 12577 19442 25154 106931 138347 184699 213862 238963 276694 369398 477926 2031689 2628593 4063378 5257186 122261017 244522034 1344871187 2322959323 2689742374 4645918646 25552552553 51105105106