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15211131149 = 163331281933
BaseRepresentation
bin11100010101010011…
…10111000100001101
31110021002102112011202
432022221313010031
5222123022144044
610553215155245
71045642324064
oct161251670415
943232375152
1015211131149
1164a6317a75
122b46215b25
1315854cca26
14a442a31db
155e061bc4e
hex38aa7710d

15211131149 has 8 divisors (see below), whose sum is σ = 15350742432. Its totient is φ = 15072084720.

The previous prime is 15211131139. The next prime is 15211131151. The reversal of 15211131149 is 94113111251.

15211131149 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 15211131149 - 216 = 15211065613 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 (15211131139) by changing a digit.

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, 87014 + ... + 194919.

It is an arithmetic number, because the mean of its divisors is an integer number (1918842804).

Almost surely, 215211131149 is an apocalyptic number.

It is an amenable number.

15211131149 is a deficient number, since it is larger than the sum of its proper divisors (139611283).

15211131149 is a wasteful number, since it uses less digits than its factorization.

15211131149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 282427.

The product of its digits is 1080, while the sum is 29.

The spelling of 15211131149 in words is "fifteen billion, two hundred eleven million, one hundred thirty-one thousand, one hundred forty-nine".

Divisors: 1 163 331 53953 281933 45955079 93319823 15211131149