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48831860781 = 3211677361957
BaseRepresentation
bin101101011110100110…
…110001000000101101
311200001011202112212100
4231132212301000231
51300001424021111
634233312125313
73346045653024
oct553646610055
9150034675770
1048831860781
1119789348840
129569836839
1347b2a524a2
1425135358bb
15140c04e756
hexb5e9b102d

48831860781 has 24 divisors (see below), whose sum is σ = 78095650464. Its totient is φ = 29153345760.

The previous prime is 48831860771. The next prime is 48831860821. The reversal of 48831860781 is 18706813884.

It is a happy number.

48831860781 is a `hidden beast` number, since 488 + 3 + 1 + 86 + 0 + 7 + 81 = 666.

48831860781 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 48831860781 - 27 = 48831860653 is a prime.

It is a super-2 number, since 2×488318607812 (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (48831860711) 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, 3674346 + ... + 3687611.

It is an arithmetic number, because the mean of its divisors is an integer number (3253985436).

Almost surely, 248831860781 is an apocalyptic number.

It is an amenable number.

48831860781 is a deficient number, since it is larger than the sum of its proper divisors (29263789683).

48831860781 is a wasteful number, since it uses less digits than its factorization.

48831860781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7362041 (or 7362038 counting only the distinct ones).

The product of its (nonzero) digits is 2064384, while the sum is 54.

The spelling of 48831860781 in words is "forty-eight billion, eight hundred thirty-one million, eight hundred sixty thousand, seven hundred eighty-one".

Divisors: 1 3 9 11 33 67 99 201 603 737 2211 6633 7361957 22085871 66257613 80981527 242944581 493251119 728833743 1479753357 4439260071 5425762309 16277286927 48831860781