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2171142066 = 232771306343
BaseRepresentation
bin1000000101101000…
…1111111110110010
312121022101110000010
42001122033332302
513421303021231
6555235035350
7104542255152
oct20132177662
95538343003
102171142066
11a1460a195
1250713bb56
13287a69462
141684c8762
15ca91b546
hex8168ffb2

2171142066 has 16 divisors (see below), whose sum is σ = 4357963584. Its totient is φ = 721100784.

The previous prime is 2171142037. The next prime is 2171142091. The reversal of 2171142066 is 6602411712.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 651510 + ... + 654833.

It is an arithmetic number, because the mean of its divisors is an integer number (272372724).

Almost surely, 22171142066 is an apocalyptic number.

2171142066 is an abundant number, since it is smaller than the sum of its proper divisors (2186821518).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2171142066 is a wasteful number, since it uses less digits than its factorization.

2171142066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1306625.

The product of its (nonzero) digits is 4032, while the sum is 30.

The square root of 2171142066 is about 46595.5155138346. The cubic root of 2171142066 is about 1294.8796747721.

Adding to 2171142066 its reverse (6602411712), we get a palindrome (8773553778).

The spelling of 2171142066 in words is "two billion, one hundred seventy-one million, one hundred forty-two thousand, sixty-six".

Divisors: 1 2 3 6 277 554 831 1662 1306343 2612686 3919029 7838058 361857011 723714022 1085571033 2171142066