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68766111057 = 3719315559553
BaseRepresentation
bin100000000001011000…
…1111001010101010001
320120111102120101110010
41000002301321111101
52111313111023212
651331332225133
74653042204540
oct1000261712521
9216442511403
1068766111057
112718874a046
12113b176b1a9
13663b919057
143484bc4157
151bc712e03c
hex1002c79551

68766111057 has 32 divisors (see below), whose sum is σ = 113859665920. Its totient is φ = 36025896960.

The previous prime is 68766111047. The next prime is 68766111067. The reversal of 68766111057 is 75011166786.

It is an interprime number because it is at equal distance from previous prime (68766111047) and next prime (68766111067).

It is not a de Polignac number, because 68766111057 - 214 = 68766094673 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 68766110997 and 68766111015.

It is not an unprimeable number, because it can be changed into a prime (68766111047) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2767408 + ... + 2792145.

It is an arithmetic number, because the mean of its divisors is an integer number (3558114560).

Almost surely, 268766111057 is an apocalyptic number.

It is an amenable number.

68766111057 is a deficient number, since it is larger than the sum of its proper divisors (45093554863).

68766111057 is a wasteful number, since it uses less digits than its factorization.

68766111057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5559613.

The product of its (nonzero) digits is 423360, while the sum is 48.

The spelling of 68766111057 in words is "sixty-eight billion, seven hundred sixty-six million, one hundred eleven thousand, fifty-seven".

Divisors: 1 3 7 19 21 31 57 93 133 217 399 589 651 1767 4123 12369 5559553 16678659 38916871 105631507 116750613 172346143 316894521 517038429 739420549 1206423001 2218261647 3274576717 3619269003 9823730151 22922037019 68766111057