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47351431660 = 22513839217069
BaseRepresentation
bin101100000110010111…
…011000000111101100
311112020000001221220011
4230012113120013230
51233433431303120
633430345303004
73264261346111
oct540627300754
9145200057804
1047351431660
11190997154a5
129215a94a64
134608123220
142412a88908
1513720bdc5a
hexb065d81ec

47351431660 has 48 divisors (see below), whose sum is σ = 107215214400. Its totient is φ = 17462686464.

The previous prime is 47351431657. The next prime is 47351431693. The reversal of 47351431660 is 6613415374.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 109606 + ... + 326674.

It is an arithmetic number, because the mean of its divisors is an integer number (2233650300).

Almost surely, 247351431660 is an apocalyptic number.

It is an amenable number.

47351431660 is an abundant number, since it is smaller than the sum of its proper divisors (59863782740).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

47351431660 is a wasteful number, since it uses less digits than its factorization.

47351431660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 217930 (or 217928 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 40.

The spelling of 47351431660 in words is "forty-seven billion, three hundred fifty-one million, four hundred thirty-one thousand, six hundred sixty".

Divisors: 1 2 4 5 10 13 20 26 52 65 130 260 839 1678 3356 4195 8390 10907 16780 21814 43628 54535 109070 217069 218140 434138 868276 1085345 2170690 2821897 4341380 5643794 11287588 14109485 28218970 56437940 182120891 364241782 728483564 910604455 1821208910 2367571583 3642417820 4735143166 9470286332 11837857915 23675715830 47351431660