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68954027761 = 2315491935443
BaseRepresentation
bin100000000110111111…
…0101111011011110001
320120222112011112201001
41000031332233123301
52112204212342021
651402124042001
74660513364623
oct1001576573361
9216875145631
1068954027761
1127274829703
1211444693301
13666b832478
1434a1b3cc13
151bd889d091
hex100dfaf6f1

68954027761 has 8 divisors (see below), whose sum is σ = 71998516800. Its totient is φ = 65913412752.

The previous prime is 68954027729. The next prime is 68954027767. The reversal of 68954027761 is 16772045986.

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 68954027761 - 25 = 68954027729 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68954027767) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 932095 + ... + 1003348.

It is an arithmetic number, because the mean of its divisors is an integer number (8999814600).

Almost surely, 268954027761 is an apocalyptic number.

It is an amenable number.

68954027761 is a deficient number, since it is larger than the sum of its proper divisors (3044489039).

68954027761 is a wasteful number, since it uses less digits than its factorization.

68954027761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1937015.

The product of its (nonzero) digits is 5080320, while the sum is 55.

The spelling of 68954027761 in words is "sixty-eight billion, nine hundred fifty-four million, twenty-seven thousand, seven hundred sixty-one".

Divisors: 1 23 1549 35627 1935443 44515189 2998001207 68954027761