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47048906149 = 76721272307
BaseRepresentation
bin101011110100010101…
…010101010110100101
311111102220211001220121
4223310111111112211
51232324004444044
633340341201541
73253626050410
oct536425252645
9144386731817
1047048906149
1118a53976613
1291507002b1
13458a54ca4b
1423c4818b77
151355761984
hexaf45555a5

47048906149 has 4 divisors (see below), whose sum is σ = 53770178464. Its totient is φ = 40327633836.

The previous prime is 47048906137. The next prime is 47048906207. The reversal of 47048906149 is 94160984074.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 47048906149 - 29 = 47048905637 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 47048906096 and 47048906105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47048906449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3360636147 + ... + 3360636160.

It is an arithmetic number, because the mean of its divisors is an integer number (13442544616).

Almost surely, 247048906149 is an apocalyptic number.

It is an amenable number.

47048906149 is a deficient number, since it is larger than the sum of its proper divisors (6721272315).

47048906149 is an equidigital number, since it uses as much as digits as its factorization.

47048906149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6721272314.

The product of its (nonzero) digits is 1741824, while the sum is 52.

The spelling of 47048906149 in words is "forty-seven billion, forty-eight million, nine hundred six thousand, one hundred forty-nine".

Divisors: 1 7 6721272307 47048906149