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71119000921 = 611165885261
BaseRepresentation
bin100001000111100000…
…1011101010101011001
320210120101221120120011
41002033001131111121
52131122431012141
652401023001521
75065252351003
oct1021701352531
9223511846504
1071119000921
1128185905021
12119497392a1
13692521ba87
14362949d373
151cb399b881
hex108f05d559

71119000921 has 4 divisors (see below), whose sum is σ = 72284886244. Its totient is φ = 69953115600.

The previous prime is 71119000913. The next prime is 71119000933. The reversal of 71119000921 is 12900091117.

71119000921 = T217743 + T217744 + T217745.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1002608896 + 70116392025 = 31664^2 + 264795^2 .

It is a cyclic number.

It is not a de Polignac number, because 71119000921 - 23 = 71119000913 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71119070921) 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 3 ways as a sum of consecutive naturals, for example, 582942570 + ... + 582942691.

It is an arithmetic number, because the mean of its divisors is an integer number (18071221561).

Almost surely, 271119000921 is an apocalyptic number.

71119000921 is the 217745-th centered triangular number.

It is an amenable number.

71119000921 is a deficient number, since it is larger than the sum of its proper divisors (1165885323).

71119000921 is a wasteful number, since it uses less digits than its factorization.

71119000921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1165885322.

The product of its (nonzero) digits is 1134, while the sum is 31.

The spelling of 71119000921 in words is "seventy-one billion, one hundred nineteen million, nine hundred twenty-one", and thus it is an aban number.

Divisors: 1 61 1165885261 71119000921