Base | Representation |
---|---|
bin | 111111011101111101… |
… | …011010010011010101 |
3 | 20111220101012000201110 |
4 | 333131331122103111 |
5 | 2104031440411233 |
6 | 51150144045233 |
7 | 4631531416212 |
oct | 773575322325 |
9 | 214811160643 |
10 | 68148372693 |
11 | 269a0a86075 |
12 | 1125a903819 |
13 | 657094c5ab |
14 | 3426b40b09 |
15 | 1b8ccaa663 |
hex | fddf5a4d5 |
68148372693 has 8 divisors (see below), whose sum is σ = 93795609856. Its totient is φ = 43966692000.
The previous prime is 68148372689. The next prime is 68148372727. The reversal of 68148372693 is 39627384186.
It is a sphenic number, since it is the product of 3 distinct primes.
It is not a de Polignac number, because 68148372693 - 22 = 68148372689 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 (68148376693) 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, 366389008 + ... + 366389193.
It is an arithmetic number, because the mean of its divisors is an integer number (11724451232).
Almost surely, 268148372693 is an apocalyptic number.
It is an amenable number.
68148372693 is a deficient number, since it is larger than the sum of its proper divisors (25647237163).
68148372693 is a wasteful number, since it uses less digits than its factorization.
68148372693 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 732778235.
The product of its digits is 10450944, while the sum is 57.
The spelling of 68148372693 in words is "sixty-eight billion, one hundred forty-eight million, three hundred seventy-two thousand, six hundred ninety-three".
• e-mail: info -at- numbersaplenty.com • Privacy notice • done in 0.079 sec. • engine limits •