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53143491458 = 253618218913
BaseRepresentation
bin110001011111100110…
…010101001110000010
312002011122212002020102
4301133212111032002
51332314213211313
640225213242402
73560642136611
oct613746251602
9162148762212
1053143491458
11205a112a782
12a371793402
13501c0b4845
142802009878
1515b082ea58
hexc5f995382

53143491458 has 16 divisors (see below), whose sum is σ = 82550772216. Its totient is φ = 25643005440.

The previous prime is 53143491451. The next prime is 53143491491. The reversal of 53143491458 is 85419434135.

It is a happy number.

53143491458 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 18875187769 + 34268303689 = 137387^2 + 185117^2 .

It is not an unprimeable number, because it can be changed into a prime (53143491451) 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, 4102991 + ... + 4115922.

Almost surely, 253143491458 is an apocalyptic number.

53143491458 is a deficient number, since it is larger than the sum of its proper divisors (29407280758).

53143491458 is a wasteful number, since it uses less digits than its factorization.

53143491458 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8219029.

The product of its digits is 1036800, while the sum is 47.

The spelling of 53143491458 in words is "fifty-three billion, one hundred forty-three million, four hundred ninety-one thousand, four hundred fifty-eight".

Divisors: 1 2 53 61 106 122 3233 6466 8218913 16437826 435602389 501353693 871204778 1002707386 26571745729 53143491458