Base | Representation |
---|---|
bin | 11100110101011100010000… |
… | …11011111101001110100101 |
3 | 22022111211102122121222112222 |
4 | 32122232020123331032211 |
5 | 31302342402123032101 |
6 | 342505350435522125 |
7 | 16233066302266412 |
oct | 1632561033751645 |
9 | 268454378558488 |
10 | 63408891220901 |
11 | 19227618034026 |
12 | 7141099459345 |
13 | 294c581aa1285 |
14 | 11930145ad109 |
15 | 74e62658101b |
hex | 39ab886fd3a5 |
63408891220901 has 8 divisors (see below), whose sum is σ = 65041255981464. Its totient is φ = 61780612481280.
The previous prime is 63408891220879. The next prime is 63408891221003. The reversal of 63408891220901 is 10902219880436.
It is a Cunningham number, because it is equal to 79629702+1.
It can be written as a sum of positive squares in 4 ways, for example, as 1 + 63408891220900 = 1^2 + 7962970^2 .
It is a sphenic number, since it is the product of 3 distinct primes.
It is a cyclic number.
It is a de Polignac number, because none of the positive numbers 2k-63408891220901 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 (63408891220201) 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, 1021473800 + ... + 1021535873.
It is an arithmetic number, because the mean of its divisors is an integer number (8130156997683).
Almost surely, 263408891220901 is an apocalyptic number.
It is an amenable number.
63408891220901 is a deficient number, since it is larger than the sum of its proper divisors (1632364760563).
63408891220901 is a wasteful number, since it uses less digits than its factorization.
63408891220901 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 2043010471.
The product of its (nonzero) digits is 1492992, while the sum is 53.
The spelling of 63408891220901 in words is "sixty-three trillion, four hundred eight billion, eight hundred ninety-one million, two hundred twenty thousand, nine hundred one".
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