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58012310821 = 184133150617
BaseRepresentation
bin110110000001110011…
…011001110100100101
312112201222101201210111
4312001303121310211
51422302122421241
642352301053021
74122412335343
oct660163316445
9175658351714
1058012310821
112266a489833
12b2b0257171
135616a0344a
142b448c0993
151797ec2c81
hexd81cd9d25

58012310821 has 4 divisors (see below), whose sum is σ = 58015479852. Its totient is φ = 58009141792.

The previous prime is 58012310791. The next prime is 58012310827. The reversal of 58012310821 is 12801321085.

58012310821 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 36044921025 + 21967389796 = 189855^2 + 148214^2 .

It is a cyclic number.

It is not a de Polignac number, because 58012310821 - 29 = 58012310309 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (58012310827) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1556896 + ... + 1593721.

It is an arithmetic number, because the mean of its divisors is an integer number (14503869963).

Almost surely, 258012310821 is an apocalyptic number.

It is an amenable number.

58012310821 is a deficient number, since it is larger than the sum of its proper divisors (3169031).

58012310821 is a wasteful number, since it uses less digits than its factorization.

58012310821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3169030.

The product of its (nonzero) digits is 3840, while the sum is 31.

The spelling of 58012310821 in words is "fifty-eight billion, twelve million, three hundred ten thousand, eight hundred twenty-one".

Divisors: 1 18413 3150617 58012310821