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67249683241 = 135173052557
BaseRepresentation
bin111110101000011001…
…001011101100101001
320102120202010212112221
4332220121023230221
52100211404330431
650521042034041
74600336606306
oct765031135451
9212522125487
1067249683241
112657a769414
1211049948921
1364596c45a0
14337d6460ad
151b38e3c111
hexfa864bb29

67249683241 has 4 divisors (see below), whose sum is σ = 72422735812. Its totient is φ = 62076630672.

The previous prime is 67249683173. The next prime is 67249683271. The reversal of 67249683241 is 14238694276.

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 43773008400 + 23476674841 = 209220^2 + 153221^2 .

It is a cyclic number.

It is not a de Polignac number, because 67249683241 - 211 = 67249681193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (67249683271) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 2586526266 + ... + 2586526291.

It is an arithmetic number, because the mean of its divisors is an integer number (18105683953).

Almost surely, 267249683241 is an apocalyptic number.

It is an amenable number.

67249683241 is a deficient number, since it is larger than the sum of its proper divisors (5173052571).

67249683241 is a wasteful number, since it uses less digits than its factorization.

67249683241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5173052570.

The product of its digits is 3483648, while the sum is 52.

The spelling of 67249683241 in words is "sixty-seven billion, two hundred forty-nine million, six hundred eighty-three thousand, two hundred forty-one".

Divisors: 1 13 5173052557 67249683241