Base | Representation |
---|---|
bin | 111111100111000010… |
… | …111000011001011111 |
3 | 20112022000000012220200 |
4 | 333213002320121133 |
5 | 2104340001123011 |
6 | 51213231114543 |
7 | 4635362143356 |
oct | 774702703137 |
9 | 215260005820 |
10 | 68300801631 |
11 | 26a6a0271a7 |
12 | 112a1972a53 |
13 | 65963bbc2a |
14 | 343d09c99d |
15 | 1b9b369856 |
hex | fe70b865f |
68300801631 has 24 divisors (see below), whose sum is σ = 99916536720. Its totient is φ = 44955388800.
The previous prime is 68300801629. The next prime is 68300801659. The reversal of 68300801631 is 13610800386.
It is not a de Polignac number, because 68300801631 - 21 = 68300801629 is a prime.
It is a super-2 number, since 2×683008016312 (a number of 22 digits) contains 22 as substring.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (68300801671) by changing a digit.
It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 151776 + ... + 399546.
It is an arithmetic number, because the mean of its divisors is an integer number (4163189030).
Almost surely, 268300801631 is an apocalyptic number.
68300801631 is a deficient number, since it is larger than the sum of its proper divisors (31615735089).
68300801631 is a wasteful number, since it uses less digits than its factorization.
68300801631 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 248167 (or 248164 counting only the distinct ones).
The product of its (nonzero) digits is 20736, while the sum is 36.
The spelling of 68300801631 in words is "sixty-eight billion, three hundred million, eight hundred one thousand, six hundred thirty-one".
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