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22343454451 = 131170560721
BaseRepresentation
bin10100110011110001…
…100000111011110011
32010200011011002102001
4110303301200323303
5331224411020301
614133041434431
71420456141423
oct246361407363
963604132361
1022343454451
11952633003a
1243b693ba17
132151055a86
14111d626483
158ab872c01
hex533c60ef3

22343454451 has 4 divisors (see below), whose sum is σ = 22514015304. Its totient is φ = 22172893600.

The previous prime is 22343454437. The next prime is 22343454517. The reversal of 22343454451 is 15445434322.

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 22343454451 - 219 = 22342930163 is a prime.

It is a super-2 number, since 2×223434544512 (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 22343454451.

It is not an unprimeable number, because it can be changed into a prime (22343454431) 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 3 ways as a sum of consecutive naturals, for example, 85280230 + ... + 85280491.

It is an arithmetic number, because the mean of its divisors is an integer number (5628503826).

Almost surely, 222343454451 is an apocalyptic number.

22343454451 is a deficient number, since it is larger than the sum of its proper divisors (170560853).

22343454451 is a wasteful number, since it uses less digits than its factorization.

22343454451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170560852.

The product of its digits is 230400, while the sum is 37.

Adding to 22343454451 its reverse (15445434322), we get a palindrome (37788888773).

It can be divided in two parts, 223434 and 54451, that added together give a triangular number (277885 = T745).

The spelling of 22343454451 in words is "twenty-two billion, three hundred forty-three million, four hundred fifty-four thousand, four hundred fifty-one".

Divisors: 1 131 170560721 22343454451