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101689474940 = 22517299086691
BaseRepresentation
bin101111010110100101…
…0100011111101111100
3100201110220200120011122
41132231022203331330
53131230001144230
6114414314210112
710226650163264
oct1365512437574
9321426616148
10101689474940
113a14306a689
121785b723938
139787842461
144cc95a67a4
1529a270ebe5
hex17ad2a3f7c

101689474940 has 24 divisors (see below), whose sum is σ = 226109539152. Its totient is φ = 38283096320.

The previous prime is 101689474927. The next prime is 101689474963. The reversal of 101689474940 is 49474986101.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 149543006 + ... + 149543685.

It is an arithmetic number, because the mean of its divisors is an integer number (9421230798).

Almost surely, 2101689474940 is an apocalyptic number.

101689474940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

101689474940 is an abundant number, since it is smaller than the sum of its proper divisors (124420064212).

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

101689474940 is a wasteful number, since it uses less digits than its factorization.

101689474940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 299086717 (or 299086715 counting only the distinct ones).

The product of its (nonzero) digits is 1741824, while the sum is 53.

The spelling of 101689474940 in words is "one hundred one billion, six hundred eighty-nine million, four hundred seventy-four thousand, nine hundred forty".

Divisors: 1 2 4 5 10 17 20 34 68 85 170 340 299086691 598173382 1196346764 1495433455 2990866910 5084473747 5981733820 10168947494 20337894988 25422368735 50844737470 101689474940