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47872043961 = 372325660163
BaseRepresentation
bin101100100101011001…
…010110101110111001
311120120021200210201020
4230211121112232321
51241020220401321
633554144013053
73313212442200
oct544531265671
9146507623636
1047872043961
11193365801a5
129340301189
13468bc44341
142461c88237
1513a2b594c6
hexb25656bb9

47872043961 has 12 divisors (see below), whose sum is σ = 74250517392. Its totient is φ = 27355453608.

The previous prime is 47872043953. The next prime is 47872043963. The reversal of 47872043961 is 16934027874.

It is not a de Polignac number, because 47872043961 - 23 = 47872043953 is a prime.

It is not an unprimeable number, because it can be changed into a prime (47872043963) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 162829935 + ... + 162830228.

It is an arithmetic number, because the mean of its divisors is an integer number (6187543116).

Almost surely, 247872043961 is an apocalyptic number.

It is an amenable number.

47872043961 is a deficient number, since it is larger than the sum of its proper divisors (26378473431).

47872043961 is a wasteful number, since it uses less digits than its factorization.

47872043961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 325660180 (or 325660173 counting only the distinct ones).

The product of its (nonzero) digits is 2032128, while the sum is 51.

The spelling of 47872043961 in words is "forty-seven billion, eight hundred seventy-two million, forty-three thousand, nine hundred sixty-one".

Divisors: 1 3 7 21 49 147 325660163 976980489 2279621141 6838863423 15957347987 47872043961