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620222440513 = 1347709418501
BaseRepresentation
bin10010000011010000010…
…00110110010001000001
32012021220100221110202111
421001220020312101001
540130203421044023
61152532023215321
762544455521354
oct11015010662101
92167810843674
10620222440513
1121a042442455
12a02532a7541
1346643448640
1422039d1029b
15112003c700d
hex9068236441

620222440513 has 4 divisors (see below), whose sum is σ = 667931859028. Its totient is φ = 572513022000.

The previous prime is 620222440511. The next prime is 620222440529. The reversal of 620222440513 is 315044222026.

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 309055941184 + 311166499329 = 555928^2 + 557823^2 .

It is a cyclic number.

It is not a de Polignac number, because 620222440513 - 21 = 620222440511 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (620222440511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23854709238 + ... + 23854709263.

It is an arithmetic number, because the mean of its divisors is an integer number (166982964757).

Almost surely, 2620222440513 is an apocalyptic number.

It is an amenable number.

620222440513 is a deficient number, since it is larger than the sum of its proper divisors (47709418515).

620222440513 is a wasteful number, since it uses less digits than its factorization.

620222440513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47709418514.

The product of its (nonzero) digits is 23040, while the sum is 31.

Adding to 620222440513 its reverse (315044222026), we get a palindrome (935266662539).

The spelling of 620222440513 in words is "six hundred twenty billion, two hundred twenty-two million, four hundred forty thousand, five hundred thirteen".

Divisors: 1 13 47709418501 620222440513