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21411432311 = 51439416249
BaseRepresentation
bin10011111100001110…
…001000011101110111
32001021012101110101112
4103330032020131313
5322322311313221
613500345145235
71355411112623
oct237416103567
961235343345
1021411432311
119098217005
12419678b21b
132032c29b99
141071932183
15854b1d15b
hex4fc388777

21411432311 has 4 divisors (see below), whose sum is σ = 21411900000. Its totient is φ = 21410964624.

The previous prime is 21411432281. The next prime is 21411432319. The reversal of 21411432311 is 11323411412.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-21411432311 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21411432319) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 156686 + ... + 259563.

It is an arithmetic number, because the mean of its divisors is an integer number (5352975000).

Almost surely, 221411432311 is an apocalyptic number.

21411432311 is a deficient number, since it is larger than the sum of its proper divisors (467689).

21411432311 is an equidigital number, since it uses as much as digits as its factorization.

21411432311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 467688.

The product of its digits is 576, while the sum is 23.

Adding to 21411432311 its reverse (11323411412), we get a palindrome (32734843723).

The spelling of 21411432311 in words is "twenty-one billion, four hundred eleven million, four hundred thirty-two thousand, three hundred eleven".

Divisors: 1 51439 416249 21411432311