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10109708981 = 131383201497
BaseRepresentation
bin10010110101001010…
…11110101010110101
3222002120012102112222
421122211132222311
5131201041141411
64351102052125
7505346052131
oct113245365265
928076172488
1010109708981
114318737a99
121b6187a045
13c51650228
146bc9603c1
153e282e4db
hex25a95eab5

10109708981 has 8 divisors (see below), whose sum is σ = 10213530624. Its totient is φ = 10006291360.

The previous prime is 10109708881. The next prime is 10109709011. The reversal of 10109708981 is 18980790101.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 10109708981 - 210 = 10109707957 is a prime.

It is a super-2 number, since 2×101097089812 (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10109708881) 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, 50576 + ... + 150921.

It is an arithmetic number, because the mean of its divisors is an integer number (1276691328).

Almost surely, 210109708981 is an apocalyptic number.

It is an amenable number.

10109708981 is a deficient number, since it is larger than the sum of its proper divisors (103821643).

10109708981 is a wasteful number, since it uses less digits than its factorization.

10109708981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202011.

The product of its (nonzero) digits is 36288, while the sum is 44.

The spelling of 10109708981 in words is "ten billion, one hundred nine million, seven hundred eight thousand, nine hundred eighty-one".

Divisors: 1 131 383 50173 201497 26396107 77173351 10109708981