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53109567385 = 572236804557
BaseRepresentation
bin110001011101100100…
…111010111110011001
312002002022000120011021
4301131210322332121
51332232022124020
640222002202441
73560050605610
oct613544727631
9162068016137
1053109567385
1120583a6a056
12a362353421
135015067724
1427db6d8877
1515ac87d1aa
hexc5d93af99

53109567385 has 16 divisors (see below), whose sum is σ = 73162607616. Its totient is φ = 36254674368.

The previous prime is 53109567367. The next prime is 53109567389. The reversal of 53109567385 is 58376590135.

It is a cyclic number.

It is not a de Polignac number, because 53109567385 - 235 = 18749829017 is a prime.

It is a super-2 number, since 2×531095673852 (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (53109567389) 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, 3394474 + ... + 3410083.

It is an arithmetic number, because the mean of its divisors is an integer number (4572662976).

Almost surely, 253109567385 is an apocalyptic number.

It is an amenable number.

53109567385 is a deficient number, since it is larger than the sum of its proper divisors (20053040231).

53109567385 is a wasteful number, since it uses less digits than its factorization.

53109567385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6804792.

The product of its (nonzero) digits is 3402000, while the sum is 52.

The spelling of 53109567385 in words is "fifty-three billion, one hundred nine million, five hundred sixty-seven thousand, three hundred eighty-five".

Divisors: 1 5 7 35 223 1115 1561 7805 6804557 34022785 47631899 238159495 1517416211 7587081055 10621913477 53109567385