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8018071145 = 57232726821
BaseRepresentation
bin1110111011110101…
…00000111001101001
3202200210102012211222
413131322200321221
5112410111234040
63403343031425
7402460323500
oct73572407151
922623365758
108018071145
113444aa0587
12167929b575
139aa1cc5c6
14560c4d837
1531ddb9bb5
hex1ddea0e69

8018071145 has 12 divisors (see below), whose sum is σ = 11192573124. Its totient is φ = 5498105760.

The previous prime is 8018071123. The next prime is 8018071157. The reversal of 8018071145 is 5411708108.

It can be written as a sum of positive squares in 2 ways, for example, as 3102378601 + 4915692544 = 55699^2 + 70112^2 .

It is not a de Polignac number, because 8018071145 - 26 = 8018071081 is a prime.

It is a super-2 number, since 2×80180711452 (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a Duffinian number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 16363166 + ... + 16363655.

It is an arithmetic number, because the mean of its divisors is an integer number (932714427).

Almost surely, 28018071145 is an apocalyptic number.

It is an amenable number.

8018071145 is a deficient number, since it is larger than the sum of its proper divisors (3174501979).

8018071145 is a wasteful number, since it uses less digits than its factorization.

8018071145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32726840 (or 32726833 counting only the distinct ones).

The product of its (nonzero) digits is 8960, while the sum is 35.

The square root of 8018071145 is about 89543.6828871808. The cubic root of 8018071145 is about 2001.5047962602.

The spelling of 8018071145 in words is "eight billion, eighteen million, seventy-one thousand, one hundred forty-five".

Divisors: 1 5 7 35 49 245 32726821 163634105 229087747 1145438735 1603614229 8018071145