Base | Representation |
---|---|
bin | 111111010110111111… |
… | …011101111111110111 |
3 | 20111121020012211120121 |
4 | 333112333131333313 |
5 | 2103312024042412 |
6 | 51130410312411 |
7 | 4625611652551 |
oct | 772677357767 |
9 | 214536184517 |
10 | 68031471607 |
11 | 26940aa0600 |
12 | 11227728707 |
13 | 655266c058 |
14 | 34153d04d1 |
15 | 1b828b8107 |
hex | fd6fddff7 |
68031471607 has 12 divisors (see below), whose sum is σ = 79177125888. Its totient is φ = 58208744000.
The previous prime is 68031471589. The next prime is 68031471619. The reversal of 68031471607 is 70617413086.
It is not a de Polignac number, because 68031471607 - 27 = 68031471479 is a prime.
It is a super-2 number, since 2×680314716072 (a number of 22 digits) contains 22 as substring.
It is a Duffinian number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (68031571607) by changing a digit.
It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16534519 + ... + 16538632.
It is an arithmetic number, because the mean of its divisors is an integer number (6598093824).
Almost surely, 268031471607 is an apocalyptic number.
68031471607 is a deficient number, since it is larger than the sum of its proper divisors (11145654281).
68031471607 is a wasteful number, since it uses less digits than its factorization.
68031471607 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 33073190 (or 33073179 counting only the distinct ones).
The product of its (nonzero) digits is 169344, while the sum is 43.
The spelling of 68031471607 in words is "sixty-eight billion, thirty-one million, four hundred seventy-one thousand, six hundred seven".
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