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47865856061 = 178947335653
BaseRepresentation
bin101100100101000001…
…110000000000111101
311120112212001102111202
4230211001300000331
51241012124343221
633553403225245
73313106030522
oct544501600075
9146485042452
1047865856061
1119333034131
12933a218225
13468a88896a
142461117149
1513a2335d0b
hexb2507003d

47865856061 has 8 divisors (see below), whose sum is σ = 47911204440. Its totient is φ = 47820532032.

The previous prime is 47865856057. The next prime is 47865856091. The reversal of 47865856061 is 16065856874.

It can be written as a sum of positive squares in 4 ways, for example, as 17195339161 + 30670516900 = 131131^2 + 175130^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 47865856061 - 22 = 47865856057 is a prime.

It is a super-2 number, since 2×478658560612 (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 47865855988 and 47865856006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47865856021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8464511 + ... + 8470163.

It is an arithmetic number, because the mean of its divisors is an integer number (5988900555).

Almost surely, 247865856061 is an apocalyptic number.

It is an amenable number.

47865856061 is a deficient number, since it is larger than the sum of its proper divisors (45348379).

47865856061 is a wasteful number, since it uses less digits than its factorization.

47865856061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12175.

The product of its (nonzero) digits is 9676800, while the sum is 56.

The spelling of 47865856061 in words is "forty-seven billion, eight hundred sixty-five million, eight hundred fifty-six thousand, sixty-one".

Divisors: 1 1789 4733 5653 8467337 10113217 26755649 47865856061