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2115042663 = 3920376607
BaseRepresentation
bin111111000010000…
…1111110101100111
312110101211022002110
41332010033311213
513312422331123
6545512412103
7103261365066
oct17604176547
95411738073
102115042663
11995982948
124b03a7033
13279256a46
14160c841dd
15c5a39493
hex7e10fd67

2115042663 has 8 divisors (see below), whose sum is σ = 2820400128. Its totient is φ = 1409856824.

The previous prime is 2115042619. The next prime is 2115042697. The reversal of 2115042663 is 3662405112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2115042663 - 26 = 2115042599 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2115042663.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2115042263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10695 + ... + 65912.

It is an arithmetic number, because the mean of its divisors is an integer number (352550016).

Almost surely, 22115042663 is an apocalyptic number.

2115042663 is a deficient number, since it is larger than the sum of its proper divisors (705357465).

2115042663 is an equidigital number, since it uses as much as digits as its factorization.

2115042663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85813.

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 2115042663 is about 45989.5929858050. The cubic root of 2115042663 is about 1283.6295630028.

Adding to 2115042663 its reverse (3662405112), we get a palindrome (5777447775).

The spelling of 2115042663 in words is "two billion, one hundred fifteen million, forty-two thousand, six hundred sixty-three".

Divisors: 1 3 9203 27609 76607 229821 705014221 2115042663