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6681158030 = 25868176963
BaseRepresentation
bin1100011100011101…
…00110000110001110
3122020121202222211102
412032032212012032
5102140334024110
63022544223102
7324364622561
oct61616460616
918217688742
106681158030
112919380a08
12136560aa92
1382623bb61
144754804d8
152918375a5
hex18e3a618e

6681158030 has 16 divisors (see below), whose sum is σ = 12027626064. Its totient is φ = 2672120640.

The previous prime is 6681158023. The next prime is 6681158039. The reversal of 6681158030 is 308511866.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6681158039) 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, 48329 + ... + 125291.

It is an arithmetic number, because the mean of its divisors is an integer number (751726629).

Almost surely, 26681158030 is an apocalyptic number.

6681158030 is a deficient number, since it is larger than the sum of its proper divisors (5346468034).

6681158030 is a wasteful number, since it uses less digits than its factorization.

6681158030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85651.

The product of its (nonzero) digits is 34560, while the sum is 38.

The square root of 6681158030 is about 81738.3510354839. The cubic root of 6681158030 is about 1883.4347603680.

Adding to 6681158030 its reverse (308511866), we get a palindrome (6989669896).

The spelling of 6681158030 in words is "six billion, six hundred eighty-one million, one hundred fifty-eight thousand, thirty".

Divisors: 1 2 5 10 8681 17362 43405 76963 86810 153926 384815 769630 668115803 1336231606 3340579015 6681158030