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47900131839 = 337236205693
BaseRepresentation
bin101100100111000100…
…100000000111111111
311120122020112211001000
4230213010200013333
51241044413204324
634001030021343
73314003255100
oct544704400777
9146566484030
1047900131839
111935041501a
1293497a7853
1346949c9ba1
1424658ba3a7
1513a53569c9
hexb271201ff

47900131839 has 24 divisors (see below), whose sum is σ = 82548982320. Its totient is φ = 27371503152.

The previous prime is 47900131837. The next prime is 47900131861. The reversal of 47900131839 is 93813100974.

47900131839 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 47900131839 - 21 = 47900131837 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 47900131794 and 47900131803.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47900131837) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18101524 + ... + 18104169.

It is an arithmetic number, because the mean of its divisors is an integer number (3439540930).

Almost surely, 247900131839 is an apocalyptic number.

47900131839 is a gapful number since it is divisible by the number (49) formed by its first and last digit.

47900131839 is a deficient number, since it is larger than the sum of its proper divisors (34648850481).

47900131839 is a wasteful number, since it uses less digits than its factorization.

47900131839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36205716 (or 36205703 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 45.

The spelling of 47900131839 in words is "forty-seven billion, nine hundred million, one hundred thirty-one thousand, eight hundred thirty-nine".

Divisors: 1 3 7 9 21 27 49 63 147 189 441 1323 36205693 108617079 253439851 325851237 760319553 977553711 1774078957 2280958659 5322236871 6842875977 15966710613 47900131839