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18019116675 = 32527243191199
BaseRepresentation
bin10000110010000001…
…011110011010000011
31201111210010222011200
4100302001132122003
5243400343213200
612140004112243
71205346651600
oct206201363203
951453128150
1018019116675
11770735a06a
1235aa695683
131912194921
14c2d1a56a7
15706dd2800
hex43205e683

18019116675 has 216 divisors, whose sum is σ = 38811801600. Its totient is φ = 7963401600.

The previous prime is 18019116641. The next prime is 18019116677. The reversal of 18019116675 is 57661191081.

It is not a de Polignac number, because 18019116675 - 26 = 18019116611 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 18019116675.

It is not an unprimeable number, because it can be changed into a prime (18019116677) by changing a digit.

It is a polite number, since it can be written in 215 ways as a sum of consecutive naturals, for example, 90548226 + ... + 90548424.

Almost surely, 218019116675 is an apocalyptic number.

18019116675 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

18019116675 is an abundant number, since it is smaller than the sum of its proper divisors (20792684925).

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

18019116675 is a wasteful number, since it uses less digits than its factorization.

18019116675 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 463 (or 448 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 45.

The spelling of 18019116675 in words is "eighteen billion, nineteen million, one hundred sixteen thousand, six hundred seventy-five".