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68023211117 = 178738065591
BaseRepresentation
bin111111010110011111…
…111101010001101101
320111120122200011022112
4333112133331101231
52103302420223432
651125513253405
74625451516521
oct772637752155
9214518604275
1068023211117
1126937369354
1211224a04265
136550a391a4
14341427dd81
151b81cd57b2
hexfd67fd46d

68023211117 has 4 divisors (see below), whose sum is σ = 68061278496. Its totient is φ = 67985143740.

The previous prime is 68023211111. The next prime is 68023211129. The reversal of 68023211117 is 71111232086.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 68023211117 - 234 = 50843341933 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 (68023211111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19031009 + ... + 19034582.

It is an arithmetic number, because the mean of its divisors is an integer number (17015319624).

Almost surely, 268023211117 is an apocalyptic number.

It is an amenable number.

68023211117 is a deficient number, since it is larger than the sum of its proper divisors (38067379).

68023211117 is a wasteful number, since it uses less digits than its factorization.

68023211117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38067378.

The product of its (nonzero) digits is 4032, while the sum is 32.

The spelling of 68023211117 in words is "sixty-eight billion, twenty-three million, two hundred eleven thousand, one hundred seventeen".

Divisors: 1 1787 38065591 68023211117