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68623030117 = 82782978271
BaseRepresentation
bin111111111010010000…
…000101011101100101
320120010110100010022001
4333322100011131211
52111014443430432
651305221405301
74646354063125
oct777220053545
9216113303261
1068623030117
1127114a03234
1211371869831
1366180a0585
14346dbbac85
151bb97b99e7
hexffa405765

68623030117 has 4 divisors (see below), whose sum is σ = 68706009216. Its totient is φ = 68540051020.

The previous prime is 68623030031. The next prime is 68623030159. The reversal of 68623030117 is 71103032686.

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 68623030117 - 27 = 68623029989 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 (68623031117) 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, 41488309 + ... + 41489962.

It is an arithmetic number, because the mean of its divisors is an integer number (17176502304).

Almost surely, 268623030117 is an apocalyptic number.

It is an amenable number.

68623030117 is a deficient number, since it is larger than the sum of its proper divisors (82979099).

68623030117 is an equidigital number, since it uses as much as digits as its factorization.

68623030117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82979098.

The product of its (nonzero) digits is 36288, while the sum is 37.

The spelling of 68623030117 in words is "sixty-eight billion, six hundred twenty-three million, thirty thousand, one hundred seventeen".

Divisors: 1 827 82978271 68623030117