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27948375967 = 139741727109
BaseRepresentation
bin11010000001110110…
…100101111110011111
32200010202210121021211
4122001312211332133
5424214241012332
620501142405251
72006405163451
oct320166457637
980122717254
1027948375967
1110942147586
1254bba30827
132835314395
1414d1b922d1
15ad896a447
hex681da5f9f

27948375967 has 8 divisors (see below), whose sum is σ = 28154277200. Its totient is φ = 27742544064.

The previous prime is 27948375953. The next prime is 27948376007. The reversal of 27948375967 is 76957384972.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-27948375967 is a prime.

It is a super-2 number, since 2×279483759672 (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27948375937) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1017409 + ... + 1044517.

It is an arithmetic number, because the mean of its divisors is an integer number (3519284650).

Almost surely, 227948375967 is an apocalyptic number.

27948375967 is a deficient number, since it is larger than the sum of its proper divisors (205901233).

27948375967 is a wasteful number, since it uses less digits than its factorization.

27948375967 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34665.

The product of its digits is 160030080, while the sum is 67.

The spelling of 27948375967 in words is "twenty-seven billion, nine hundred forty-eight million, three hundred seventy-five thousand, nine hundred sixty-seven".

Divisors: 1 139 7417 27109 1030963 3768151 201067453 27948375967