Search a number
-
+
21150023044415 = 54230004608883
BaseRepresentation
bin1001100111100010111111…
…00111000100110100111111
32202212220220110201020000012
410303301133213010310333
510233010221344410130
6112552104135053435
74312016200431026
oct463613747046477
982786813636005
1021150023044415
1168147466a0751
122457023b1127b
13ba5591839a75
145319491338bd
1526a26222e995
hex133c5f9c4d3f

21150023044415 has 4 divisors (see below), whose sum is σ = 25380027653304. Its totient is φ = 16920018435528.

The previous prime is 21150023044399. The next prime is 21150023044439. The reversal of 21150023044415 is 51444032005112.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 21150023044415 - 24 = 21150023044399 is a prime.

It is a super-4 number, since 4×211500230444154 (a number of 54 digits) contains 4444 as substring. Note that it is a super-d number also for d = 3.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2115002304437 + ... + 2115002304446.

It is an arithmetic number, because the mean of its divisors is an integer number (6345006913326).

Almost surely, 221150023044415 is an apocalyptic number.

21150023044415 is a deficient number, since it is larger than the sum of its proper divisors (4230004608889).

21150023044415 is an equidigital number, since it uses as much as digits as its factorization.

21150023044415 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4230004608888.

The product of its (nonzero) digits is 19200, while the sum is 32.

Adding to 21150023044415 its reverse (51444032005112), we get a palindrome (72594055049527).

The spelling of 21150023044415 in words is "twenty-one trillion, one hundred fifty billion, twenty-three million, forty-four thousand, four hundred fifteen".

Divisors: 1 5 4230004608883 21150023044415