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48857948813 = 178952161981
BaseRepresentation
bin101101100000001010…
…010010001010001101
311200002222211221220202
4231200022102022031
51300030113330223
634240043223245
73346513466312
oct554012221215
9150088757822
1048857948813
11197a20470a3
129576517b25
1347b82879ab
142516ba6d09
15140e4a4428
hexb6029228d

48857948813 has 16 divisors (see below), whose sum is σ = 52414458480. Its totient is φ = 45379276800.

The previous prime is 48857948801. The next prime is 48857948819. The reversal of 48857948813 is 31884975884.

It can be written as a sum of positive squares in 8 ways, for example, as 344362249 + 48513586564 = 18557^2 + 220258^2 .

It is a cyclic number.

It is not a de Polignac number, because 48857948813 - 26 = 48857948749 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 48857948813.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (48857948819) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 757283 + ... + 819263.

It is an arithmetic number, because the mean of its divisors is an integer number (3275903655).

Almost surely, 248857948813 is an apocalyptic number.

It is an amenable number.

48857948813 is a deficient number, since it is larger than the sum of its proper divisors (3556509667).

48857948813 is a wasteful number, since it uses less digits than its factorization.

48857948813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62608.

The product of its digits is 61931520, while the sum is 65.

The spelling of 48857948813 in words is "forty-eight billion, eight hundred fifty-seven million, nine hundred forty-eight thousand, eight hundred thirteen".

Divisors: 1 17 89 521 1513 8857 46369 61981 788273 1053677 5516309 32292101 93777253 548965717 2873996989 48857948813