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18069445030 = 2571319856533
BaseRepresentation
bin10000110101000001…
…011101100110100110
31201122021211220200211
4100311001131212212
5244001234220110
612145002530034
71206530514520
oct206501354646
951567756624
1018069445030
11773280454a
12360350691a
13191c736610
14c35b46a10
1570b52498a
hex43505d9a6

18069445030 has 32 divisors (see below), whose sum is σ = 40030772544. Its totient is φ = 5718681216.

The previous prime is 18069445001. The next prime is 18069445039. The reversal of 18069445030 is 3054496081.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18069445039) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9927357 + ... + 9929176.

It is an arithmetic number, because the mean of its divisors is an integer number (1250961642).

Almost surely, 218069445030 is an apocalyptic number.

18069445030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18069445030 is an abundant number, since it is smaller than the sum of its proper divisors (21961327514).

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

18069445030 is a wasteful number, since it uses less digits than its factorization.

18069445030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19856560.

The product of its (nonzero) digits is 103680, while the sum is 40.

The spelling of 18069445030 in words is "eighteen billion, sixty-nine million, four hundred forty-five thousand, thirty".

Divisors: 1 2 5 7 10 13 14 26 35 65 70 91 130 182 455 910 19856533 39713066 99282665 138995731 198565330 258134929 277991462 516269858 694978655 1290674645 1389957310 1806944503 2581349290 3613889006 9034722515 18069445030