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61906944657448 = 23115219231347877
BaseRepresentation
bin11100001001101110101010…
…11100100000100000101000
322010012020122102012011202201
432010313111130200200220
531103240410313014243
6335355354024305544
716016425541165632
oct1604672534404050
9263166572164681
1061906944657448
11187a8651391810
126b39b926122b4
132870a522ccc97
1411404525d7a52
1572551d37c04d
hex384dd5720828

61906944657448 has 32 divisors (see below), whose sum is σ = 126628177908960. Its totient is φ = 28139445506880.

The previous prime is 61906944657427. The next prime is 61906944657449. The reversal of 61906944657448 is 84475644960916.

It is not an unprimeable number, because it can be changed into a prime (61906944657449) 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, 45255286 + ... + 46603162.

It is an arithmetic number, because the mean of its divisors is an integer number (3957130559655).

Almost surely, 261906944657448 is an apocalyptic number.

It is an amenable number.

61906944657448 is an abundant number, since it is smaller than the sum of its proper divisors (64721233251512).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61906944657448 is a wasteful number, since it uses less digits than its factorization.

61906944657448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1869817 (or 1869813 counting only the distinct ones).

The product of its (nonzero) digits is 1254113280, while the sum is 73.

The spelling of 61906944657448 in words is "sixty-one trillion, nine hundred six billion, nine hundred forty-four million, six hundred fifty-seven thousand, four hundred forty-eight".

Divisors: 1 2 4 8 11 22 44 88 521923 1043846 1347877 2087692 2695754 4175384 5391508 5741153 10783016 11482306 14826647 22964612 29653294 45929224 59306588 118613176 703488007471 1406976014942 2813952029884 5627904059768 7738368082181 15476736164362 30953472328724 61906944657448