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68007770770 = 256800777077
BaseRepresentation
bin111111010101100101…
…000011101010010010
320111112120121201010211
4333111211003222102
52103234442131040
651124202314334
74625203341112
oct772545035222
9214476551124
1068007770770
1126929682835
121121b7b89aa
13654a7912a4
1434121c1042
151b807858ea
hexfd5943a92

68007770770 has 8 divisors (see below), whose sum is σ = 122413987404. Its totient is φ = 27203108304.

The previous prime is 68007770741. The next prime is 68007770773. The reversal of 68007770770 is 7707770086.

It can be written as a sum of positive squares in 2 ways, for example, as 66657428761 + 1350342009 = 258181^2 + 36747^2 .

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

It is not an unprimeable number, because it can be changed into a prime (68007770773) 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, 3400388529 + ... + 3400388548.

Almost surely, 268007770770 is an apocalyptic number.

68007770770 is a deficient number, since it is larger than the sum of its proper divisors (54406216634).

68007770770 is a wasteful number, since it uses less digits than its factorization.

68007770770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6800777084.

The product of its (nonzero) digits is 806736, while the sum is 49.

The spelling of 68007770770 in words is "sixty-eight billion, seven million, seven hundred seventy thousand, seven hundred seventy".

Divisors: 1 2 5 10 6800777077 13601554154 34003885385 68007770770