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18241133011 = 471492925997
BaseRepresentation
bin10000111111010000…
…011001100111010011
31202002020220120022221
4100333100121213103
5244324212224021
612214014441511
71214014033543
oct207720314723
952066816287
1018241133011
11781070a242
123650b03297
13194918a03a
14c50879323
1571b63a241
hex43f4199d3

18241133011 has 8 divisors (see below), whose sum is σ = 18631206720. Its totient is φ = 17851141248.

The previous prime is 18241132993. The next prime is 18241133017. The reversal of 18241133011 is 11033114281.

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 18241133011 - 225 = 18207578579 is a prime.

It is a super-2 number, since 2×182411330112 (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18241133017) 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, 688665 + ... + 714661.

It is an arithmetic number, because the mean of its divisors is an integer number (2328900840).

Almost surely, 218241133011 is an apocalyptic number.

18241133011 is a deficient number, since it is larger than the sum of its proper divisors (390073709).

18241133011 is a wasteful number, since it uses less digits than its factorization.

18241133011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40973.

The product of its (nonzero) digits is 576, while the sum is 25.

Adding to 18241133011 its reverse (11033114281), we get a palindrome (29274247292).

The spelling of 18241133011 in words is "eighteen billion, two hundred forty-one million, one hundred thirty-three thousand, eleven".

Divisors: 1 47 14929 25997 701663 1221859 388109213 18241133011