Base | Representation |
---|---|
bin | 111001101001010000… |
… | …111001111100001110 |
3 | 12220202121110022122202 |
4 | 321221100321330032 |
5 | 2003230232101304 |
6 | 44233501041502 |
7 | 4320554522150 |
oct | 715120717416 |
9 | 186677408582 |
10 | 61895581454 |
11 | 24282495503 |
12 | bbb4856292 |
13 | 5ab53a4815 |
14 | 2dd252aad0 |
15 | 1923d8b81e |
hex | e69439f0e |
61895581454 has 16 divisors (see below), whose sum is σ = 106110202848. Its totient is φ = 26525804832.
The previous prime is 61895581453. The next prime is 61895581457. The reversal of 61895581454 is 45418559816.
It is a Curzon number.
It is a self number, because there is not a number n which added to its sum of digits gives 61895581454.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (61895581453) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (19) of ones.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 554192 + ... + 656444.
It is an arithmetic number, because the mean of its divisors is an integer number (6631887678).
Almost surely, 261895581454 is an apocalyptic number.
61895581454 is a deficient number, since it is larger than the sum of its proper divisors (44214621394).
61895581454 is a wasteful number, since it uses less digits than its factorization.
61895581454 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 145499.
The product of its digits is 6912000, while the sum is 56.
The spelling of 61895581454 in words is "sixty-one billion, eight hundred ninety-five million, five hundred eighty-one thousand, four hundred fifty-four".
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