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909100000100 = 225210190009901
BaseRepresentation
bin11010011101010101001…
…01010010001101100100
310012220112202000222121002
431032222211102031210
5104343314100000400
61533345040012432
7122452226334035
oct15165245221544
93186482028532
10909100000100
11320602282636
12128233901118
136795cb7cc56
1432001bcca8c
15189ab3aced5
hexd3aa952364

909100000100 has 36 divisors (see below), whose sum is σ = 1992279170868. Its totient is φ = 360039600000.

The previous prime is 909100000087. The next prime is 909100000117. The reversal of 909100000100 is 1000001909.

It can be written as a sum of positive squares in 6 ways, for example, as 7158513664 + 901941486436 = 84608^2 + 949706^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 44994851 + ... + 45015050.

Almost surely, 2909100000100 is an apocalyptic number.

It is an amenable number.

909100000100 is an abundant number, since it is smaller than the sum of its proper divisors (1083179170768).

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

909100000100 is a wasteful number, since it uses less digits than its factorization.

909100000100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90010016 (or 90010009 counting only the distinct ones).

The product of its (nonzero) digits is 81, while the sum is 20.

The spelling of 909100000100 in words is "nine hundred nine billion, one hundred million, one hundred", and thus it is an aban number.

Divisors: 1 2 4 5 10 20 25 50 100 101 202 404 505 1010 2020 2525 5050 10100 90009901 180019802 360039604 450049505 900099010 1800198020 2250247525 4500495050 9000990100 9091000001 18182000002 36364000004 45455000005 90910000010 181820000020 227275000025 454550000050 909100000100