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67000000075 = 52173110747527
BaseRepresentation
bin111110011001100000…
…101101111001001011
320101221100022122122021
4332121200231321023
52044204000000300
650440202305311
74561215414121
oct763140557113
9211840278567
1067000000075
1126461831798
1210b9a1b8237
136419a63178
14335840d911
151b2206bd1a
hexf9982de4b

67000000075 has 48 divisors (see below), whose sum is σ = 91655276544. Its totient is φ = 48362457600.

The previous prime is 67000000061. The next prime is 67000000079. The reversal of 67000000075 is 57000000076.

It is not a de Polignac number, because 67000000075 - 229 = 66463129163 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a junction number, because it is equal to n+sod(n) for n = 66999999986 and 67000000049.

It is not an unprimeable number, because it can be changed into a prime (67000000079) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1385962 + ... + 1433488.

It is an arithmetic number, because the mean of its divisors is an integer number (1909484928).

Almost surely, 267000000075 is an apocalyptic number.

67000000075 is a deficient number, since it is larger than the sum of its proper divisors (24655276469).

67000000075 is a wasteful number, since it uses less digits than its factorization.

67000000075 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47692 (or 47687 counting only the distinct ones).

The product of its (nonzero) digits is 1470, while the sum is 25.

Subtracting from 67000000075 its reverse (57000000076), we obtain a palindrome (9999999999).

The spelling of 67000000075 in words is "sixty-seven billion, seventy-five", and thus it is an aban number and an uban number.

Divisors: 1 5 17 25 31 85 107 155 425 527 535 775 1819 2635 2675 3317 9095 13175 16585 45475 47527 56389 82925 237635 281945 807959 1188175 1409725 1473337 4039795 5085389 7366685 20198975 25046729 25426945 36833425 86451613 125233645 127134725 157647059 432258065 626168225 788235295 2161290325 2680000003 3941176475 13400000015 67000000075