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68000374877 = 2911320750801
BaseRepresentation
bin111111010101001000…
…110110000001011101
320111112001200221212212
4333111020312001131
52103231043444002
651123340010205
74625053435541
oct772510660135
9214461627785
1068000374877
1126925491126
1211219230965
1365490a1b16
143411217a21
151b7ecc4352
hexfd523605d

68000374877 has 8 divisors (see below), whose sum is σ = 70967742840. Its totient is φ = 65074508800.

The previous prime is 68000374859. The next prime is 68000374879. The reversal of 68000374877 is 77847300086.

It can be written as a sum of positive squares in 4 ways, for example, as 18156121 + 67982218756 = 4261^2 + 260734^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 68000374877 - 220 = 67999326301 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68000374879) 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 7 ways as a sum of consecutive naturals, for example, 10372124 + ... + 10378677.

It is an arithmetic number, because the mean of its divisors is an integer number (8870967855).

Almost surely, 268000374877 is an apocalyptic number.

It is an amenable number.

68000374877 is a deficient number, since it is larger than the sum of its proper divisors (2967367963).

68000374877 is a wasteful number, since it uses less digits than its factorization.

68000374877 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20750943.

The product of its (nonzero) digits is 1580544, while the sum is 50.

The spelling of 68000374877 in words is "sixty-eight billion, three hundred seventy-four thousand, eight hundred seventy-seven".

Divisors: 1 29 113 3277 20750801 601773229 2344840513 68000374877