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66962426898 = 2316076944869
BaseRepresentation
bin111110010111010001…
…011000110000010010
320101211201121201221010
4332113101120300102
52044114340130043
650432341111350
74560251144253
oct762721306022
9211751551833
1066962426898
11264425a9484
1210b896b8556
136412039113
14335342cb2a
151b1dae9133
hexf97458c12

66962426898 has 16 divisors (see below), whose sum is σ = 134008211520. Its totient is φ = 22306916016.

The previous prime is 66962426893. The next prime is 66962426899. The reversal of 66962426898 is 89862426966.

It is not an unprimeable number, because it can be changed into a prime (66962426893) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3462793 + ... + 3482076.

It is an arithmetic number, because the mean of its divisors is an integer number (8375513220).

Almost surely, 266962426898 is an apocalyptic number.

66962426898 is an abundant number, since it is smaller than the sum of its proper divisors (67045784622).

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

66962426898 is a wasteful number, since it uses less digits than its factorization.

66962426898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6946481.

The product of its digits is 107495424, while the sum is 66.

The spelling of 66962426898 in words is "sixty-six billion, nine hundred sixty-two million, four hundred twenty-six thousand, eight hundred ninety-eight".

Divisors: 1 2 3 6 1607 3214 4821 9642 6944869 13889738 20834607 41669214 11160404483 22320808966 33481213449 66962426898